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


class ProblemCSmall {
	// Not happy that my previous approaches didn't work and that I have to do it this way, but whatever works...
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		int T = in.nextInt(), I = 0;
		while (T --> 0) {
			int A = in.nextInt(), B = in.nextInt();
			int lenA = (int) Math.log10(A), lenB = (int) Math.log10(B);
			int prevStart = A;
			HashSet<String> pairs = new HashSet<String>();
			for (int i = lenA; i <= lenB; ++i) {
				int currPow10 = (int) Math.pow(10, i);
				int start = (int) Math.max(prevStart, currPow10), end = (int) Math.min(B, 10*currPow10-1);
				for (int j = start; j <= end; ++j) {
					int k = j;
					for (int l = 0; l < i; ++l) {
						k = (k % currPow10) * 10 + (k / currPow10);
						if (k >= start && k <= end && k != j) {
							pairs.add(String.format("%07d%07d", Math.min(j, k), Math.max(j, k)));
						}
					}
				}
				prevStart = end + 1;
			}
			System.out.printf("Case #%d: %d\n", ++I, pairs.size());
		}
	}

}
