package qual;

import java.util.Scanner;

public class RecycledNumbers {

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

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Q3 {

	public static void main (String[] args)
	{
		Scanner s = new Scanner(System.in);
		int numTests = s.nextInt();
		for (int test = 0; test < numTests; test++)
		{
			int a = s.nextInt();
			int b = s.nextInt();
			int count = 0;
			for (int i = a; i < b; i++)
			{
				String si = String.valueOf(i);
				Set<Integer> found = new HashSet<Integer>();
				for (int j = 0; j < si.length(); j++)
				{
					String sj = si.substring(j) + si.substring(0, j);
					int other = Integer.parseInt(sj);
					if (!found.contains(other) && other > i && other <= b)
					{
						found.add(other);
						count++;
					}
				}
			}
			System.out.println("Case #" + (test+1) + ": " + count);
		}
	}
	
}
