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 static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
import java.io.*;
import java.math.*;
import java.util.*;

@SuppressWarnings("unused")
public class C_RecycledNumbers {
	public static void main(String[] args) throws Exception {
		// Scanner in = new Scanner(System.in);
		// PrintStream out = System.out;
		Scanner in = new Scanner(new File("C-small.in"));
		PrintStream out = new PrintStream("C-small.out");
		// Scanner in = new Scanner(new File("C-large.in"));
		// PrintStream out = new PrintStream("C-large.out");
		int T = in.nextInt();
		for (int i = 1; i <= T; i++) {
			int A = in.nextInt();
			int B = in.nextInt();
			TreeSet<pair> set = new TreeSet<pair>();
			for (int n = A; n <= B; n++) {
				String s = Integer.toString(n);
				for (int j = 0; j <= s.length(); j++) {
					int m = Integer.parseInt(s.substring(j) + s.substring(0, j));
					if (A <= n && n < m && m <= B) {
						set.add(new pair(n, m));
					}
				}
			}
			out.println("Case #" + i + ": " + set.size());
		}
	}

	static class pair implements Comparable<pair> {
		int a, b;

		public pair(int a, int b) {
			this.a = a;
			this.b = b;
		}

		public int compareTo(pair p) {
			if (a == p.a)
				return b - p.b;
			return a - p.a;
		}
	}
}
