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;
	}
}

// Problem B

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Locale;
import java.util.Scanner;
import java.util.Set;

public class C {
	
	private void processInput() throws IOException {
		Scanner in = new Scanner(System.in);
		
		int T = in.nextInt();
		
		for (int testCase = 1; testCase <= T; testCase++) {
			int A = in.nextInt();
            int B = in.nextInt();
			int res = go(A, B);

			System.out.printf(Locale.ENGLISH, "Case #%d: %d\n", testCase, res);
		}
		
		in.close();
	}
	
	private int go(int A, int B) {
		
        int res = 0;

        Set<Integer> set = new HashSet<Integer>();
        int l = String.valueOf(A).length();
        for (int n = A; n <= B; n++) {
            set.clear();
            String m = String.valueOf(n);
            for (int j = 1; j < l; j++) {
                m = m.charAt(l - 1) + m.substring(0, l - 1);
                if (m.charAt(0) != '0') {
                    int val = Integer.valueOf(m);
                    if (val > n && val <= B) {
                        set.add(val);
                    }
                }
            }
            res += set.size();
        }
		return res;
	}

	public static void main(String[] args) throws Exception {
		C temp = new C();
		temp.processInput();
	}
}
