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.*;
import java.util.*;


public class RecycledNumbers {
	
	static LinkedList<String> seen = new LinkedList<String>();
	static int min, max;
	static int count;
	
	public static void main (String[] args) throws IOException {
		Scanner in = new Scanner(new File("C-small.txt"));
		
		int cases;
		cases = in.nextInt();
		
		
		for (int n = 0; n < cases; n++) {
			seen = new LinkedList<String>();
			min = in.nextInt();
			max = in.nextInt();
			
			count = 0;
			
			for (int i = min; i < max; i++) {
				findPairs(i);
			}
			
			System.out.println("Case #" + (n+1) + ": " + count);
		}

	}
	
	public static void findPairs(int num) {
		String n = "" + num;
		int result;
		
		for (int i = 1; i < n.length(); i++) {
			result = Integer.parseInt(n.substring(i) + n.substring(0, i));
			
			if (result > num && result <= max && !(seen.contains(n + " " + result))) {
				count ++;
				seen.add(n + " " + result);
			}
		}
	}
}