/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.*;
import java.util.*;

public class C {
	public static void main(String[] args) throws Exception{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		
		Scanner sc = new Scanner(br.readLine());
		int T = sc.nextInt();
		int caseNumber = 1;
		
		
		for(int i=0; i<T; i++){
			sc = new Scanner(br.readLine());
			int A = sc.nextInt();
			int B = sc.nextInt();
			
			int n = A;
			int m = A;
			int count = 0;
			
			
			for(int j=A; j<B; j++){
				n = j;
				
				for(int k=j; k<B; k++){
					m = k+1;
					
					String sn = ""+n;
					String sm = ""+m;
					if(n<m && !sn.equals(sm)){
						for(int l=1; l<sn.length(); l++){
							String smt = sm.substring(l) + sm.substring(0, l);
							if(Integer.parseInt(smt) == n){
								//System.out.println("sn="+sn + "    sm="+ sm);
								count++;
							}
						}
					}
				}
			}
			
			
			
			System.out.println("Case #"+caseNumber+": "+ count);
			caseNumber++;
		}
		
	}
}