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

public class RecycledPairs {
	public static void main(String[] args) {
		
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			HashSet<Integer> seen = new HashSet<Integer>();
			
			int T = Integer.parseInt(br.readLine());
			for (int t=1; t<=T; t++) {
				String[] nums = br.readLine().split("\\s+");
				int A = Integer.parseInt(nums[0]);
				int B = Integer.parseInt(nums[1]);
				int tally = 0;
				for (int i=A; i<=B; i++) {
					String istr = Integer.toString(i);
					seen = new HashSet<Integer>();
					for (int j=1; j<istr.length(); j++) {
						istr = istr.substring(1) + istr.substring(0,1);
						int newi = Integer.parseInt(istr);
						//System.out.println(newi);
						if ((newi > i) && (newi <= B) && (newi >= A)) {
							if (seen.add(newi)) {
								tally++;
								//System.out.println(i + " " + newi);
							}
						}
					}
				}
				System.out.println("Case #" + t + ": " + tally);
			}
			
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		
	}
}
