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.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author nzeyi
 */
public class C {

    public static void main(String[] arg) throws Exception {
        long a = System.currentTimeMillis();
        String in = "/home/nzeyi/Downloads/C-small-attempt0 (1).in";
        String out = "/home/nzeyi/Desktop/out";
        BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(in)));
        PrintWriter w = new PrintWriter(new FileOutputStream(out));
        int c = 0;
        int t = Integer.parseInt(r.readLine());
        String s;
        while ((s = r.readLine()) != null) {
            if (!"".equals(s)) {
                c++;
                w.print("Case #" + c + ": " + r(s));
                if (c < t) {
                    w.println();
                }
            }
        }
        r.close();
        w.flush();
        w.close();
        long b = System.currentTimeMillis();
        System.out.println("Done(MS): " + (b - a));
    }

    public static int r(String line) {
        int ret = 0;
        String[] t = line.trim().split("\\s");
        int a = Integer.parseInt(t[0]);
        int b = Integer.parseInt(t[1]);
        for (int i = a; i <= b; i++) {
            ret += p(i, b);
        }
        return ret;
    }

    public static int p(int n, int b) {
        int ret = 0;
        String ns = "" + n;
        int l = ns.length();
        Set<Integer> set = new HashSet<Integer>();
        for (int i = l - 1; i > 0; i--) {
            int r = Integer.parseInt(ns.substring(i) + ns.substring(0, i));
            if ((r > n) && (r <= b) && !set.contains(r)) {
                ret++;
                set.add(r);
            }
        }
        return ret;
    }
}
