import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;


public class Recycled {
	static int n = 1;
	
	static void solve(int A, int B) {
		int len = ("" + A).length();
		int min = 1;
		for (int a = 1; a < len; a++)
			min *= 10;
		
		int res = 0;
		
		int[] seen = new int[len];
		int nseen;
		
		for (int n = A; n < B; n++) {
			int m = n;
			nseen = 0;
			for (int a = 1; a < len; a++) {
				m = (m / 10) + (m % 10) * min;
				if (m >= min && n < m && m <= B) {
					boolean already = false;
					for (int b = 0; b < nseen; b++)
						if (seen[b] == m)
							already = true;
					if (!already) {
						res++;
						seen[nseen++] = m;
					}
				}
			}
		}
		
		System.out.println("Case #" + (n++) + ": " + res);
	}
	
	public static void main(String[] args) throws IOException {
		LineNumberReader in = new LineNumberReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(in.readLine().trim());
		
		for (int a = 0; a < n; a++) {
			String[] l = in.readLine().trim().split(" ");
			solve(Integer.parseInt(l[0]), Integer.parseInt(l[1]));
		}
	}
}
