package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {
	public static void main(String[] args){
		Scanner in;
		try {
			in = new Scanner(new File("C-small-attempt0.in"));
			solve(in);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
	public static void solve(Scanner in){
		int cases =in.nextInt();
		for(int i = 1; i<=cases; i++){
			int min = in.nextInt();
			int max = in.nextInt();
			int ans = 0;
			for(int j =min; j<=max; j++){
				ans+=combos(j, min, max);
			}
			System.out.println("Case #" +i+": "+(ans/2));
			
		}
		
	}
	public static int combos(int num, int min, int max){
		if(num<10){
			return 0;
		}
		HashSet<Integer> diffNums = new HashSet<Integer>();
		diffNums.add(num);
		int ans = 0;
		String numString = num+"";
		for(int i =0; i< numString.length(); i++){
			numString = numString.substring(1)+numString.charAt(0);
			int numTest = Integer.parseInt(numString);
			if(numTest<=max&&numTest>=min&&diffNums.add(numTest)){
				ans++;
			}
		}
		return ans;
		
		
	}
	
}
