import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}


import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
    private Scanner in;
    private PrintWriter out;
    public long output;
    public int A;
    public int B;
    /**
     * main method
     */
    public static void main(String args[]){
        new RecycledNumbers("C-large.in");
    }
    
    /**
     * constructor
     */
    public RecycledNumbers(String filename){
        initIO(filename);
        
        int n = in.nextInt();
//    	long tmStart = System.currentTimeMillis();
        
        for(int i=1;i<=n;i++){
            A = in.nextInt();
            B = in.nextInt();
            output = 0;
            output=solve();
            out.println("Case #"+i+": "+output);
        }
//        System.out.println(System.currentTimeMillis() - tmStart);
        
       closeIO();
    }
    public long solve(){
    	long op=0;
		Set<Integer> s = new HashSet<Integer>();
    	for(int i=A;i<=B;i++){
    		String stringI = Integer.toString(i);
    		s.clear();
    		for(int ind=stringI.length()-1;ind>0;ind--){
    			if(stringI.substring(ind).charAt(0)!= '0'){
    				String stringTemp = stringI.substring(ind) + stringI.substring(0, ind);
    				if(Integer.parseInt(stringTemp) > i && Integer.parseInt(stringTemp)<=B){
//    					System.out.println(stringI + "  "+Integer.parseInt(stringTemp));
    					s.add(Integer.parseInt(stringTemp));
//    					op++;
    				}
    			}
    		}
    		op+=s.size();
    	}
    	return op;
    }
    
    /**
     * Set up devices to do I/O
     */
    public void initIO(String filename){
        try {
            in = new Scanner(new FileReader(filename));
            out = new PrintWriter(new FileWriter(filename+".out"));
        }catch (IOException except) {
            System.err.println("File is missing!");
        }
    }
    
    /**
     * Free memory used for I/O
     */
    public void closeIO(){
        in.close();
        out.close();
    }

   
}
