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

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.StringTokenizer;

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

/**
 *
 * @author viswas
 */
public class Recycled {


    public static void main(String [] args)throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int t = 1;

        int T = Integer.parseInt(br.readLine());
        while(T-- > 0){

            long count = 0;
            StringTokenizer str = new StringTokenizer(br.readLine(), " ");
            int A = Integer.parseInt(str.nextToken());
            int B = Integer.parseInt(str.nextToken());

            ArrayList <Integer> Alist = new ArrayList<Integer>();

            for(int i = A; i <= B; i++){
                String s = i + "";
                String aa = s;
                int len = s.length();
                s += s;
                Alist.clear();
                for(int j = 0; j < len; j++){
                    String s1 = s.substring(j, j + len);
                    int s2 = Integer.parseInt(s1);
                    if(!Alist.contains(s2)){
                        s1 = s2 + "";
                        if(i < s2 && aa.length() == s1.length() && B >= s2){
                            count++;
                            //System.out.println(n.substring(0, len) + " " + m);
                        }
                        Alist.add(s2);
                    }
                }
            }
            System.out.printf("Case #%d: %d", t, count);
            System.out.println();
            t++;
        }
    }

}

