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.*;
import java.util.*;
import java.math.*;

public class C {
	public static void main(String[] args) throws IOException {
		long start = System.currentTimeMillis();
		BufferedInputStream bis = new BufferedInputStream(new FileInputStream("C-large.in"));
		BufferedReader br = new BufferedReader(new InputStreamReader(bis));
		PrintWriter out = new PrintWriter("C-large.out");
		int cases = Integer.parseInt(br.readLine().trim());
		StringTokenizer st;
		for (int c = 1; c <= cases; c++) {
			int res = 0;
			st = new StringTokenizer(br.readLine());
			int A = Integer.parseInt(st.nextToken());
			int B = Integer.parseInt(st.nextToken());
			for (int i = A; i <= B; i++) {
				String iStr = i+"";
				int len = iStr.length();
				for (int j = 1; j < len; j++) {
					int curr = getNext(iStr, j, len);
					if(curr > i && curr <= B)
						res++;
				}
			}
			out.println("Case #" + c + ": " + res);
		}
		out.close();
		long finish = System.currentTimeMillis();
		System.out.println(finish - start);
	}
	public static int getNext(String s, int st, int len) {
		String res = s.charAt(st)+"";
		for (int i = st+1; i%len != st; i++) {
			res += s.charAt(i%len);
		}
		return Integer.parseInt(res);
	}
}