import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class C {
	public static void main(String args[]) {
		new C();
	}

	public C() {
		Scanner in = new Scanner(System.in);

		int T = in.nextInt();
		for(int x=1; x<=T; x++) {
			int a = in.nextInt();
			int b = in.nextInt();

			int y = 0;
			for(int n=a; n<=b; n++) {
				y += check(n, b);
			}

			System.out.printf("Case #%d: %d\n", x, y);
		}
	}

	public int check(int n, int b) {
		String s = Integer.toString(n);
		int nd = s.length();

		Set<Integer> set = new TreeSet<Integer>();
		int ret = 0;
		for(int d=1; d<nd; d++) {
			String ms = s.substring(nd-d) + s.substring(0, nd-d);
			int m = Integer.parseInt(ms);
			if(n < m && m <= b) {
				if(set.contains(m)) continue;

				ret++;
				set.add(m);
			}
		}

		return ret;
	}
}