/*
 * 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 Recycle {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int numLines = sc.nextInt();
		int lineCounts = 1;
		
		while (numLines > 0) {
			String A = sc.next();
			String B = sc.next();
//			System.out.println(A + " " + B);
			
			int result = findRecyclePairs(A, B);
			System.out.println("Case #" + lineCounts + ": " +result);
			numLines--;
			lineCounts++;
		}

	}

	private static int findRecyclePairs(String a, String b) {
		
		int result = 0;
		int strLength = a.length();
		int pos;
		int num1 = Integer.parseInt(a);
		int num2 = Integer.parseInt(b);
		int i;
		int j;
		String str1;
		String str2;
		String strTemp;
		String front;
		
		
		if (strLength > 1) {
			
			for (i = num1; i < num2; i++) {
				str1 = Integer.toString(i);
				for (j = i+1; j <= num2; j++) {
					str2 = Integer.toString(j);
					for (pos = 1; pos < strLength; pos++) {
						strTemp = str1.substring(pos);
						front = str1.substring(0, pos);
//						System.out.println(str2+ " " + front);
						
						strTemp = strTemp.concat(front);
//						System.out.println("Str2: "+ str2);
						
						if (!str2.startsWith("0") && !str1.startsWith("0")) {
							if (strTemp.equals(str2)) {
								result++;
							}
						}
					}
				}
			}
			
		}
		
		return result;
	}
	
	
}
