import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Scanner;


public class GoogleRecycler {
	public static void main(String args[]) throws IOException{
		Scanner scan = new Scanner(System.in);
		PrintWriter print = new PrintWriter(new FileWriter("GoogleRecycler.out"));
		Integer cases = Integer.parseInt(scan.nextLine());
		for(int i=0; i<cases; i++){
			long A = scan.nextLong();
			long B = scan.nextLong();
//			System.out.println("A: " + A + " B: " + B);
			int total = 0;
			
			for(long n = A; n < B; n++){
				for(long m = n+1; m <= B; m++){
					//System.out.println(n + ", " + m);
					if(check(n,m)){
						total++;
//						System.err.println(n + ", " + m );
					}
				}
			}
			print.println("Case #" + (i+1) + ": " + total);
			System.out.println("Case #" + (i+1) + ": " + total);
			
		}
		print.flush();
		print.close();
	}

	public static boolean check(long a, long b){
		String num1 = String.valueOf(a);
		String num2 = String.valueOf(b);
		
		if(num1.length() != num2.length()){
			System.err.println("ERROR!!!!!");
		}

		String part1 = "";
		String part2 = "";
		for(int i=0; i < num2.length(); i++ ){
			String sub = num2.substring(0,i);
			if(num1.contains(sub)){
				part1 = sub;
			}else{
				break;
			}
		}
		for(int i=part1.length(); i<= num1.length();i++){
			String sub = num2.substring(part1.length(), i);
			if(num1.contains(sub)){
				part2 = sub;
			}else{
				break;
			}
		}

		if(part1.length() + part2.length() != num1.length()){
			return false;
		}

		if(part2.concat(part1).equals(num1)){
			return true;
		}

		return false;
	}
}
