import java.io.*;
import java.math.BigInteger;
import java.util.*;

import org.jfree.data.function.PowerFunction2D;

public class r2a
{

	Map numMap = new HashMap();
    int output = 0;

    /**
     * @param args
     */
    public static void main(String[] args)
    {
        r2a mk = new r2a();
        try {
            FileInputStream fstream = new FileInputStream("d:/cjinput.txt");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String str;
            int i = 0;
            while ((str = br.readLine()) != null) {
            	int begin=0,end = 0;
                i++;
                if (i == 1)
                    continue;
                mk.numMap = new HashMap();
                StringTokenizer strTok = new StringTokenizer(str, " ");
                while (strTok.hasMoreTokens()) {
                	begin =  Integer.parseInt(((String) strTok.nextToken()));
                    end = Integer.parseInt(((String) strTok.nextToken()));
                }

                mk.evaluate(i, begin, end);

            }
            in.close();
        }
        catch (Exception e) {
            System.err.println(e);
        }

    }

    private void evaluate(int rowNum, int begin, int end)
    {
    	output=0;
    	for (int i = begin; i<= end; i++) {
    		if(numMap.containsKey(Integer.valueOf(i)))
    			continue;
    		List l = getPairElems(i);
    		if (l.size() > 0) {
    			Iterator itr = l.iterator();
    			int ctr = 0;
    			ArrayList tempList = new ArrayList();
    			while (itr.hasNext()) {
    				int next = ((Integer)itr.next()).intValue();
    				if (next <= end && next > i) {
    					numMap.put(Integer.valueOf(next), i);
    					tempList.add(next);
    					ctr++;
    				}
    			}
    			ctr = getCounter(ctr+1,2);
/*    			if (tempList.size() > 0 || ctr > 0)
    				System.out.println("DD: " + i + ": " + tempList +" ; ctr = " + ctr);*/
    			output = output + ctr;
    		}
    		
    	}

        String outputStr = "Case #" + (rowNum -1) + ": " + output;
        
        System.out.println(outputStr);
    }

	private int getCounter(int n, int r) {
		int ret = 1;
		int nfactorial =1;
		for (int i = 2; i<=n; i++) {
			nfactorial = i*nfactorial;
		}
		int nrfact =1;
		for (int i = 2; i<=n-r; i++) {
			nrfact = i*nrfact;
		}
		
		return nfactorial/(2*nrfact);
	}

	private ArrayList getPairElems(int num) {
		ArrayList retList = new ArrayList();
		int temp = num;
		if (num/10 == 0)
			return retList;
		
		String str = String.valueOf(num);
		
		int arr[] = new int[str.length()];
		int x = str.length();
		while (temp/10 > 0) {
			arr[x-1] = temp%10;
			temp=temp/10;
			x--;
		}
		arr[0]=temp;
		
		int size = arr.length;
		for (int pos = size -1; pos >0; pos--) {
			if(arr[pos] == 0)
				continue;
			int pairNum = 0;
			int multiplier =1;
			for (int c=0; c < size-1; c++) {
				multiplier = multiplier*10;
			}
			pairNum = pairNum + (arr[pos]*multiplier);
			for(int ctr = pos+1, i=1; i < size; i++,ctr++) {
				if (ctr == size)
					ctr=0;
				if (multiplier!=1)
					multiplier=multiplier/10;
				pairNum = pairNum + (arr[ctr]*multiplier);
			}
			if (pairNum != num)
				retList.add(Integer.valueOf(pairNum));			
		}
		
		return retList;
	}
}

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
 
public class Main {
 
    public static void solve() throws Exception{
        int T = in.readInt(),t = 0;
        String format = "Case #%d: ";
        long count, temp;
        int a,b;
        String n;
        List<Long> counted = new ArrayList<Long>();
        while(t++<T){
            out.printf(format,t);
            a = in.readInt();
            b = in.readInt();
            count = 0;
            for(int i=a; i<=b; i++){
                n = String.valueOf(i);
                counted.clear();
                for(int j=1;j<n.length();j++){                   
                    n = n.charAt(n.length() - 1) + n.substring(0,n.length() - 1);
                    temp = Long.parseLong(n);
                    if(n.charAt(0) != 0 && temp < i && temp >= a && !counted.contains(temp)){
                        counted.add(temp);
                        count++;
                    }
                }
            }
            out.println(count);
        }
    }
    static InputReader in;
    static OutputWriter out;
    
    public static void start(){
        in = new InputReader(System.in);
        out = new OutputWriter(System.out);
    }
        
    public static void finish() throws Exception{
        out.close();
    }
 
    public static void main(String[] args) throws Exception {
        start();
        solve();
        finish();
    }
}
 
class InputReader extends BufferedInputStream{
    
    public InputReader(InputStream In){
        super(In);
    }
    
    public char readChar() throws Exception{
        int c = read();
        while(isStringEnd(c))
            c = read();
        return (char) c;
    }
    
    public int readInt() throws Exception {
        int sign = 1;
        int cur = 0;
        int c = read();
        while(isStringEnd(c))
            c = read();
        if(c == '-'){
            sign = -1;
            c = read();
        }
        do{
            cur *= 10;
            cur += c - '0';
            c = read();
        }while(!isStringEnd(c));
        return cur*sign;
    }
    
    public long readLong() throws Exception {
        long sign = 1;
        long cur = 0;
        int c = read();
        while(isStringEnd(c))
            c = read();
        if(c == '-'){
            sign = -1;
            c = read();
        }
        do{
            cur *= 10;
            cur += c - '0';
            c = read();
        }while(!isStringEnd(c));
        return cur*sign;
    }
    
    public double readDouble() throws Exception {
        double sign = 1;
        double cur = 0;
        int c = read();
        while(isStringEnd(c))
            c = read();
        if(c == '-'){
            sign = -1;
            c = read();
        }
        do{
            cur *= 10;
            cur += c - '0';
            c = read();
        }while(!isStringEnd(c) && c!= '.');
        if(c == '.'){
            c = read();
            double r = 0.1;
            do{
                cur += r*(c - '0');
                r *= 0.1;
                c = read();
            }while(!isStringEnd(c) && c!= '.');
        }
        return cur*sign;
    }
    
    public String readStr() throws Exception{
        int c = readChar();
        while(isStringEnd(c))
            c = read();
        StringBuilder res = new StringBuilder();
        do{
            res.append((char)c);
            c = read();
        }while(!isStringEnd(c));
        return res.toString();
    }
    
    public String readLine() throws Exception{
        int c = readChar();
        while(isStringEnd(c))
            c = read();
        StringBuilder res = new StringBuilder();
        do{
            res.append((char)c);
            c = read();
        }while(!isEOL(c));
        return res.toString();
    }
    
    public char[] readCharArray(int s) throws Exception{
        char[] a = new char[s];
        for(int i=0; i<s; i++)
            a[i] = readChar();
        return a;
    }
    
    public int[] readIntArray(int s) throws Exception{
        int[] a = new int[s];
        for(int i=0; i<s; i++)
            a[i] = readInt();
        return a;
    }
    
    public long[] readLongArray(int s) throws Exception{
        long[] a = new long[s];
        for(int i=0; i<s; i++)
            a[i] = readLong();
        return a;
    }
        
    public double[] readDoubleArray(int s) throws Exception{
        double[] a = new double[s];
        for(int i=0; i<s; i++)
            a[i] = readDouble();
        return a;
    }
    
    public String[] readStrArray(int s) throws Exception{
        String[] a = new String[s];
        for(int i=0; i<s; i++)
            a[i] = readStr();
        return a;
    }
        
    public char[][] readCharMat(int rows,int cols) throws Exception{
        char[][] a = new char[rows][];
        for(int i=0; i<rows; i++)
            a[i] = readCharArray(cols);
        return a;
    }
    
    public int[][] readIntMat(int rows,int cols) throws Exception{
        int[][] a = new int[rows][];
        for(int i=0; i<rows; i++)
            a[i] = readIntArray(cols);
        return a;
    }
    
    public long[][] readLongMat(int rows,int cols) throws Exception{
        long[][] a = new long[rows][];
        for(int i=0; i<rows; i++)
            a[i] = readLongArray(cols);
        return a;
    }
        
    public double[][] readDoubleMat(int rows,int cols) throws Exception{
        double[][] a = new double[rows][];
        for(int i=0; i<rows; i++)
            a[i] = readDoubleArray(cols);
        return a;
    }
    
    public String[][] readStrMat(int rows,int cols) throws Exception{
        String[][] a = new String[rows][];
        for(int i=0; i<rows; i++)
            a[i] = readStrArray(cols);
        return a;
    }
        
    private boolean isStringEnd(int c) {
        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
    }
    
    private boolean isEOL(int c) {
        return c == '\n' || c == '\r';
    }
}
 
class OutputWriter extends PrintWriter{
    
    public OutputWriter(OutputStream out){
        super(out);
    }
    
    public <T> void printArray(T[] a, String del){
        for(int i=0; i<a.length; i++){
            if(i!=0)
                print(del);
            print(a[i]);
        }
    }
    
    public <T> void printMat(T[][] a, String delRows, String delCols){
        for(int i=0; i<a.length; i++){
            if(i!=0)
                print(delRows);
            for(int j=0; i<a[i].length; i++){
                if(j!=0)
                    print(delCols);
                print(a[i][j]);
            }
        }
    }
    
    public <T> void printCollection(Iterable<T> c, String del){
        boolean b = true;
        for(T i : c){
            if(b)
                b = false;
            else
                print(del);
            print(i);
        }
    }
}