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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class App {
	public static void main (String[] args){
		
		try{
			FileInputStream fstream = new FileInputStream("input.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
		
			int cases = Integer.parseInt(br.readLine());
			String output = "";
			
			for(int i=1;i<=cases;i++){
				String line = br.readLine();
				String[] arr = line.split(" ");
				
				int a = Integer.parseInt(arr[0]);
				int b = Integer.parseInt(arr[1]);
				
				int count = RecyclePair.Calculate(a, b);
				
				output += "Case #"+i+": "+count;
				
				if(i+1 <= cases){
					output += "\n";
				}
			}
			
			in.close();
			System.out.println(output);
			
			FileWriter fwstream = new FileWriter("output.out");
			BufferedWriter out = new BufferedWriter(fwstream);
			out.write(output);
			out.close();
		}
		catch (Exception e) {
			
		}
		
	}
}
