/*
 * 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.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class Solution {

	/**
	 * @param args
	 * @throws Exception 
	 */
	public void doMain() throws Exception {

		Scanner sc = new Scanner(new FileReader("input.txt"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));

		int caseCnt = sc.nextInt();
		sc.nextLine();
		for (int caseNum = 0; caseNum < caseCnt; caseNum++) {
			pw.print("Case #" + (caseNum + 1) + ": ");
			//# A
			int a = sc.nextInt();
			//# B
			int b = sc.nextInt();
			
			int res = 0;
			for (int i = a; i<b; i++) {
				for (int j = i+1; j<=b ; j++) {
					if(recycledPairs(i, j, a, b)) {
						res++;
					}
				}
			}
			pw.println(res);
		}


		pw.flush();
		pw.close();
		sc.close();
	}
	
	public boolean recycledPairs(int n, int m, int a, int b) {
		boolean result = false;
		String initial = ""+n;
		String expected = ""+m;
		
		for (int i=1; i<initial.length(); i++) {
			if (expected.equals(initial.substring(i,initial.length())+initial.substring(0,i))) {
				result = true;
			}
		}
		
//		System.out.println(n+" "+m+ " "+result);
		return result;
	}

	public static void main(String[] args) throws Exception {
//		System.out.println((int)'a');
		new Solution().doMain();
	}
}
