/*
 * 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.*;
import java.util.StringTokenizer;

public class RecycledNumbers {
	public static void main(String[] args) {
		try {
			BufferedReader ifStream = new BufferedReader(new FileReader("C.in"));
			PrintWriter ofStream = new PrintWriter(new FileWriter("C.out"));
			int numCase;
			String inputCase;

			numCase = Integer.parseInt(ifStream.readLine());
			for (int i=1; i<=numCase; i++) {
				ofStream.println("Case #"+i+": "+recycledNumbers(ifStream.readLine()));
			}

			ifStream.close();
			ofStream.close();
		}
		catch (IOException e) {
			System.out.println("IOException.");
		}
	}

	private static int  recycledNumbers(String input) {
		StringTokenizer st = new StringTokenizer(input, " ", false);
		int A = Integer.parseInt(st.nextToken());
		int B = Integer.parseInt(st.nextToken());
		int numDigits = String.valueOf(A).length();
		int[] mArr = new int[numDigits];
		int count, m;
		int result = 0;

		for (int n=A; n<B; n++) {
			count = 0;
			for (int i=1; i<numDigits; i++) {
				m = shiftInt(n, i);
				if (m > n && m <= B) {
					mArr[count++] = m;
				}
			}
			result += count;
			for (int i=0; i<count; i++) {	// redundancy check
				for (int j=i+1; j<count; j++) {
					if (mArr[j] == mArr[i]) {
						result--;
						mArr[j] = 0;
					}
				}
			}
		}

		return result;
	}

	private static int shiftInt(int num, int k) {
		String before = String.valueOf(num);
		String after = before.substring(k, before.length()) + before.substring(0, k);

		return Integer.parseInt(after);
	}
}
