/*
 * 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 C {

	static boolean iftrue(int n, int m) {
		String aa = n + "";

		if (n == m)
			return false;

		for (int i = 1; i < aa.length(); i++) {
			String ll = aa.substring(i, aa.length());
			String bb = aa.substring(0, i);

			String ss = ll + bb;
			if (ss.equals(m + "") && m > n) {
				return true;
			}
		}

		return false;
	}

	public static void main(String[] args) {

		//System.out.println(iftrue(12, 31));
		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();

			int res = 0;

			for (int k = A; k <= B; k++) {
				for (int l = k + 1; l <= B; l++) {
					if (iftrue(k, l))
						res++;
				}
			}
			System.out.format("Case #%d: %s\n", i + 1, res);
		}
	}
}
