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.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class C {
	public static void main(String args[]) {
		new C();
	}

	public C() {
		Scanner in = new Scanner(System.in);

		int T = in.nextInt();
		for(int x=1; x<=T; x++) {
			int a = in.nextInt();
			int b = in.nextInt();

			int y = 0;
			for(int n=a; n<=b; n++) {
				y += check(n, b);
			}

			System.out.printf("Case #%d: %d\n", x, y);
		}
	}

	public int check(int n, int b) {
		String s = Integer.toString(n);
		int nd = s.length();

		Set<Integer> set = new TreeSet<Integer>();
		int ret = 0;
		for(int d=1; d<nd; d++) {
			String ms = s.substring(nd-d) + s.substring(0, nd-d);
			int m = Integer.parseInt(ms);
			if(n < m && m <= b) {
				if(set.contains(m)) continue;

				ret++;
				set.add(m);
			}
		}

		return ret;
	}
}