/*
 * 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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;


public class C {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader br= new BufferedReader(new FileReader(args[0]));
		BufferedWriter bw= new BufferedWriter(new FileWriter(args[0]+".out"));
		String line= br.readLine();
		int cases= Integer.parseInt(line);
		for (int i= 0; i != cases; i++) {
			Scanner sc= new Scanner(br.readLine());
			bw.write("Case #"+(i+1)+": "+recycle(sc.nextInt(), sc.nextInt())+"\n");
		}
		br.close();
		bw.close();
	}
	
	public static int recycle(int a, int b) {
		int pairs= 0;
		for (int n= a; n != b; n++) {
			char[] num= (""+n).toCharArray();
			for (int i= 0; i != num.length-1; i++) {
				char[] rec= new char[num.length];
				rec[0]= num[num.length-1];	// put last digit at beginning
				for (int j= 0; j != num.length-1; j++) rec[j+1]= num[j];
				num= rec;
				int m= Integer.parseInt(new String(num));
				if (m > n && m <= b) {
					pairs++;
					//System.out.println(q+" "+n);
				}
			}
		}
		return pairs;
	}

}
