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

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.File;
import java.util.HashSet;
import java.util.Scanner;


public class C {
	public static void main(String[] args) throws Exception {
//		Scanner in = new Scanner(new File("C-small-attempt0.bin"));
		Scanner in = new Scanner(new File("C-large.bin"));
//		Scanner in = new Scanner(new File("test.in"));
		int T = in.nextInt();
		for (int zz = 1; zz <= T; ++zz) {
			int A = in.nextInt();
			int B = in.nextInt();
			
			int r = 0;
//			HashSet<Integer> tested = new HashSet<>();
			for (int i = A; i < B; ++i) {
				int log = (int) Math.log10(i);
				int n = i;
				int p = (int) Math.pow(10, log+1);
				HashSet<Integer> tested = new HashSet<>(log);
				for (int l = 1; l <= log; ++l) {
					n *= 10;
					n = (n%p) + (n/p);
					if (tested.add(n) && n > i && n <= B)
						r++;
				}
			}
			
			System.out.format("Case #%d: %d\n", zz, r);
		}
		
	}
}
