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.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;

public class ProblemC {
	public static void main(String[] args) throws Exception {

		Scanner in = new Scanner(//
				// System.in
				new FileInputStream("c-small.in")
		// new FileInputStream("b-large.in")
		);
		PrintStream out = new PrintStream( //
				// System.out
				new FileOutputStream("c-small.out")
		// new FileOutputStream("b-large.out")
		);

		int T = in.nextInt();
		for (int i = 1; i <= T; i++) {
			int A = in.nextInt();
			int B = in.nextInt();
			int res = 0;
			for (int x = A; x < B; x++) {
				res += cycle(x, A, B);
			}
			out.println("Case #" + i + ": " + res);
		}
	}

	private static int cycle(int n, int A, int B) {
		int m = n;
		int digits = (int) Math.log10(n) + 1;
		if (digits == 1)
			return 0;
		int mul = 1;
		for (int i = 1; i < digits; i++)
			mul *= 10;
		int ret = 0;
		HashSet<Integer> used = new HashSet<Integer>();
		for (int i = 0; i < digits; i++) {
			m = (m / 10) + (m % 10) * mul;
			if (m > n && m != n && m <= B && !used.contains(m)) {
				ret++;
				used.add(m);
			}
		}
		return ret;
	}

}
