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.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Set;

import com.google.common.collect.Sets;
import com.google.common.io.LineReader;


public class RecycledNumbers {

	public static void main(String[] args) throws NumberFormatException, IOException {
		LineReader lineReader = new LineReader(new FileReader(args[0]));
		FileWriter out = new FileWriter(args[0] + "-out.txt"); 
		
		int t = Integer.parseInt(lineReader.readLine());
		for (int counter = 1; counter <= t; counter++) {
			String[] nums = lineReader.readLine().split(" ");
			int result = compute(Integer.parseInt(nums[0]), Integer.parseInt(nums[1]));
			out.write(String.format("Case #%d: %d\n", counter, result));
		}
		out.close();
	}

	private static int compute(int a, int b) {
		Set<Integer> set = Sets.newHashSet();
		int count = 0;
		for (int n = a; n < b; n++) {
			String nStr = Integer.toString(n);
			set.clear();
			for (int i = 1; i < nStr.length(); i++) {
				String fst = nStr.substring(i);
				String snd = nStr.substring(0, i);
				int m = Integer.parseInt(fst + snd);
				if (m > n && m <= b && !set.contains(m)) {
					set.add(m);
					count++;
				}
			}
		}
		
		return count;
	}
}
