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.util.*;
import java.io.*;
import static java.lang.Math.*;

public class C{
    public static void main(String[] args) throws Exception{
        new C().run();
    }

    int A, B;

    int calc(int val){
        String s = "" + val;
        int len = s.length();
        HashSet<Integer> hs = new HashSet<Integer>();
        for(int i = 1; i < len; i++){
            int rev = Integer.parseInt(s.substring(i) + s.substring(0, i));
            if(rev > val && rev <= B)
                hs.add(rev);
        }
        return hs.size();
    }

    void run() throws Exception{
        Scanner sc = new Scanner(System.in);
        //BufferedReader sc = new BufferedReader(new InputStreamReader(System.in));
        // only sc.readLine() is available
        int T = sc.nextInt();
        for(int o = 1; o <= T; o++){
            A = sc.nextInt();
            B = sc.nextInt();
            long ans = 0;
            for(int i = A; i <= B; i++)
                ans += calc(i);
            System.out.printf("Case #%d: ", o);
            System.out.println(ans);
        }
    }
}
