/*
 * 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.Scanner;


public class CC {

	
	public static void main(String[] argv){
		Scanner in = new Scanner ( System.in );
		int T=in.nextInt();
		
		for(int i=0; i<T; i++){
			
			int A=in.nextInt(); int B=in.nextInt();
			//boolean[] have=new boolean[B+1];  
			int Rep=0;
			
			for(int x=A; x<B; x++){
				for(int y=x+1; y<=B; y++){
					if((""+x).length()==1 ||(""+y).length()==1 || (""+y).length()!=(""+x).length()) continue;
					
					if(areCycl(x,y))
						Rep++;
				}
			}
			System.out.println("Case #"+(i+1)+": "+Rep);
		}
	}

	private static boolean areCycl(int x, int y) {
		String s=""+x;
		for(int p=1; p<=s.length(); p++){
			String s1=s.substring(0,p);
			String s2=s.substring(p);
			String ss=s2+s1;
			int xx=Integer.parseInt(ss);
			if(xx==y)
				return true;
		}
		return false;
	}
}