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.*;
import java.util.*;
import java.math.*;

public class Main {

    public void solve() throws IOException {
        int tests = nextInt();
        HashSet<Long> hs = new HashSet<Long>();
        for (int test=1; test<=tests; test++) {
            out.print("Case #"+test+": ");
            int a = nextInt();
            int b = nextInt();
            int t = Integer.valueOf(a).toString().length();
            int dp = 1;
            for (int i=1; i<t; i++) dp *= 10;
            int res = 0;
            for (int i=a; i<=b; i++) {
                int x = i;
                for (int j=1; j<t; j++) {
                    int d = x%10;
                    x /= 10;
                    x = x+d*dp;
                    if (x>i && x>=a && x<=b) {
                        hs.add(x*100l*dp+i);
                        res++;
                    }
                   // out.println(i+" "+x);
                }
            }
            res = hs.size();
            out.println(hs.size());
            hs.clear();
        }
    }






    BufferedReader br;
    StringTokenizer st;
    PrintWriter out;

    public void run() {
        try {
            //br = new BufferedReader(new InputStreamReader(System.in));
            //out = new PrintWriter(System.out);
            br = new BufferedReader(new FileReader("input.txt"));
            out = new PrintWriter("output.txt");
            solve();
            br.close();
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
            System.exit(123);
        }
    }

    String next() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            String s = br.readLine();
            if (s == null)
                return null;
            st = new StringTokenizer(s);
        }
        return st.nextToken();
    }

    double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    int nextInt() throws IOException {
        return Integer.parseInt(next());
    }

    long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static void main(String[] args) {
        new Main().run();
    }
}
