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

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;

/**
 *
 * @author Dean
 */
public class RecycledNumbers {

    public static void main(String args[]) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int testCases = Integer.parseInt(reader.readLine().trim());
        for (int i = 0; i < testCases; i++) {
            String split[] = reader.readLine().split("[\\s]+");
            int A = Integer.parseInt(split[0]);
            int B = Integer.parseInt(split[1]);
            System.out.println("Case #" + (i + 1) + ": " + countPermutations(A, B));
        }
    }

    public static int countPermutations(int A, int B) {
        int pow[] = new int[] {1,10,100,1000,10000,100000,1000000,10000000};
        int count = 0;

        int digits = (B + "").length();
        for (int m = A + 1; m <= B; m++) {
            HashMap<Integer, Boolean> checked = new HashMap<Integer, Boolean>(10);
            for (int i = 1; i < digits; i++) {
                int mul = (int) (Math.pow(10, i));
                int move = m % mul;
                int n = m / mul;
                n = n + move * (int) (Math.pow(10, (digits - i)));
                if ((n < m) && ((n + "").length() == digits)&& (A <= n)) {
                    //count++;
                    if (checked.containsKey(n)) {
                        continue;
                    } else {
                        count++;
                        checked.put(n, true);
                    }
                }
            }
        }
        return count;
    }
}
