/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.util.ArrayList;

public class Recycled
{
	public static void main(String[] args)
	{
		int T = StdIn.readInt();

		for(int tr = 1; tr <= T; tr++)
		{
			int A = StdIn.readInt();
			int B = StdIn.readInt();

			//total num of recycled
			int num = 0;

			for (int i = A; i <= B; i++)
			{
				//converts to string
				String temp = Integer.toString(i);

				//list of recycled numbers given m = i
				ArrayList<Integer> reNum = new ArrayList<Integer>();

				//for each shift
				for(int ind = 1; ind < temp.length(); ind++)
				{
					String first = temp.substring(0,ind);
					String last = temp.substring(ind);

					String shift = last + first;
					int shiftNum = Integer.parseInt(shift);

					if (shiftNum <= i || shiftNum > B)
						continue;

					if (reNum.indexOf(shiftNum) < 0)
					{
						reNum.add(shiftNum);
					}
				}

				num += reNum.size();
			}

			StdOut.println("Case #" + tr + ": " + num);
		}
	}
}
