import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

// usage: java c infile > outfile
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Set;
import java.util.HashSet;

public class c
{
	public static void main(String[] args) throws Exception
	{
		String infile = args[0];
		
		BufferedReader reader = new BufferedReader(new FileReader(infile));
		int T = Integer.parseInt(reader.readLine());
		for (int t = 1; t <= T; t++)
		{
			Set<String> pairs = new HashSet<String>();
			String[] inputs = reader.readLine().split(" ");
			int A = Integer.parseInt(inputs[0]);
			int B = Integer.parseInt(inputs[1]);
			int length = inputs[0].length();
			//System.out.println("test = " + A + ", " + B + ", " + length);
			
			int total = 0;
			for (int i = A; i <= B; i++)
			{
				String trial = "" + i;
				//System.out.println("i = " + i);
				for (int n = 1; n < length; n++)
				{
					int j = Integer.parseInt(trial.substring(n) + trial.substring(0, n));
					//System.out.println(trial.substring(n) + ":" + trial.substring(0, n));
					if (trial.charAt(n) == '0')
					{
						continue;
					}
					
					String pair = i + " " + j;
					if (i < j && j <= B && !pairs.contains(pair))
					{
						total++;
						pairs.add(pair);
					}
				}
			}
			
			System.out.println("Case #" + t + ": " + total);
		}
		reader.close();
	}
}
