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;
	}
}

package codejam;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StreamTokenizer;
import java.util.HashMap;
import java.util.Map;

public class RecycledNumbers {
	
	private StreamTokenizer in;
	private PrintWriter out;
	private Map<Integer, Integer> map = new HashMap<Integer, Integer>();
	//private Map<Pair, Integer> pair = new HashMap<Pair, Integer>();
	
	public static void main (String[] args) throws IOException {
		new RecycledNumbers().soilve();
	}
	
	int nextInt () throws IOException {
		in.nextToken();
		return (int)in.nval;
	}
	
	void soilve () throws IOException {
		in = new StreamTokenizer(new BufferedReader(new FileReader("./src/codejam/input.txt")));
		out = new PrintWriter(new FileWriter("./src/codejam/output.txt"));
		
		int t = nextInt();
		for (int i = 0; i < t; i++) {
			int cnt = 0;
			int a = nextInt();
			int b = nextInt();
			int len = Chain.getLen(a);
			for (int j = a; j <= b; j++) {
				cnt += check(a, b, j, len);
			}
			out.println("Case #" + (i + 1) + ": " + cnt);
		}
		
		out.flush();
	}
	
	int check(int a, int b, int q, int len) {
		//Chain chain = new Chain(q);
		if (map.containsKey(q)) {
			return map.get(q);
		}
		
		int first = q;
		int cnt = 0;
		for (int i = 1; i < len; i++) {
			int last = q % 10;
			q /= 10;
			q += last * (int)Math.pow(10, len - 1);
			if ((first < q) && (a <= q) && (q <= b)) {
				cnt++;
			}
		}
		
		map.put(first, cnt);
		return cnt;
	}
	
}

//class Pair {
//	int a, b;
//	
//	Pair(int a, int b) {
//		if (a < b) {
//			this.a = b;
//			this.b = a;
//		} else {
//			this.a = a;
//			this.b = b;
//		}
//	}
//	
//	@Override
//	public boolean equals(Object o) {
//		Pair p = (Pair)o;
//		return p.a == a && p.b == b;
//	}
//}

class Chain {
	
	int a;
	
	Chain(int a) {
		this.a = a;
	}
	
	@Override
	public boolean equals(Object b) {
		Chain c = (Chain)b;
		if (c.a == a) {
			return true;
		}
//		int lenC = getLen(c.a);
//		int lenA = getLen(a);
//		if (lenA != lenC) {
//			return false;
//		}
//		
//		if (lenA == 1) {
//			return a == c.a;
//		}
//		
//		for (int i = 1; i < lenA; i++) {
//			int last = c.a % 10;
//			c.a /= 10;
//			c.a += last * (int)Math.pow(10, lenA - 1);
//			if (c.a == a) {
//				return true;
//			}
//		}
//		
		return false;
	}
	
	public static int getLen (int a) {
		int i = 1;
		int len = 0;
		while (a / i != 0) {
			len++;
			i *= 10;
		}
		return len;
	}
	
}
