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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;

public class RecycledNumbers {

    public static int rotate(int x) {
        if (x < 10)
            return x;
        String s = String.valueOf(x);
        s = s.substring(1) + s.charAt(0);
        return Integer.parseInt(s);       
    }

    public static String rotate(String s) {
        if (s.length() < 2)
            return s;
        return s.substring(1) + s.charAt(0);
    }

    public static void solve(String file) throws Exception {
        
        BufferedReader f = new BufferedReader(new FileReader(file + ".in"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(file + ".out")));

        int T = Integer.parseInt(f.readLine());
        for (int i = 0; i < T; i++) {
            String[] s = f.readLine().split(" ");
            int A = Integer.parseInt(s[0]);
            int B = Integer.parseInt(s[1]);

            int n = 0;
            for (int j = A; j <= B; j++) {
                String x = String.valueOf(j);
                String y = x;
                while (!(y = rotate(y)).equals(x)) {
                    int r = Integer.parseInt(y);
                    if (r > j && r <= B)
                        n++;
                }
            }
            System.out.println("Case #" + (i+1) +": " + n);
            out.println("Case #" + (i+1) +": " + n);
        }
        out.close();
    }
    
    public static void main(String[] args) throws Exception {
        
        //String file = "C-test";
        String file = "C-small-attempt0";
        
        solve(file);
    }
}
