/*
 * 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.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashSet;


public class Recycle {

	public static void main(String[] args) throws IOException{
		FileInputStream inFile = new FileInputStream("C-small-attempt0.in");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(inFile);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		String inputCnt = br.readLine();
		FileOutputStream outFile = new FileOutputStream("output.txt");
		DataOutputStream out = new DataOutputStream(outFile);
		BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(out));

		int cnt = Integer.parseInt(inputCnt);
		for(int line=1;line<=cnt;line++){
			String inputString = br.readLine();
			String[] splited = inputString.split(" ");
			int A = Integer.parseInt(splited[0]);
			int B = Integer.parseInt(splited[1]);
			String outputString = "Case #"+line+": ";
			int result = 0;
			for(Integer num = A; num<=B; num++){
				//for each number 
				String s = num.toString();
				result += permute(s,num,B);
			}
			outputString += result+"";
			wr.write(outputString);
			wr.newLine();
			wr.flush();

		}
		wr.close();
		out.close();
		br.close();
		in.close();
		inFile.close();
		outFile.close();
	}

	public static int permute(String original, int min, int max) {
		String target = original;
		HashSet<Integer> resultSet =  new HashSet<Integer>();
		for(int i = 1;i<original.length();i++){
			String shifted = target.charAt(target.length()-1)+"";
			shifted += target.substring(0,target.length()-1);
			int potential = Integer.parseInt(shifted);
			if(potential>min && potential <= max)
				resultSet.add(potential);
			target = shifted;
		}
		return resultSet.size();
	}
}
