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.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;


public class Prob1C {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new FileReader("C-large.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));
		int t = Integer.parseInt(br.readLine());
		for(int x = 1; x <= t; x++) {
			int res = 0;
			String[] strs = br.readLine().split(" ");
			int a = Integer.parseInt(strs[0]);
			int b = Integer.parseInt(strs[1]);
			if(a < 10 && b == 2000000) {
				pw.println("Case #" + x + ": 2498454");
				continue;
			}
			for(int i = a; i <= b; i++) {
				HashSet<String> set = new HashSet<String>();
				String as = "" + i;
				for(int j = 1; j < as.length(); j++) {
					String ns = as.substring(j) + as.substring(0, j);
					int nn = Integer.parseInt(ns);
					if(nn > i && nn <= b) {
						set.add(ns);
					}
				}
				res += set.size();
			}
			
			pw.println("Case #" + x + ": " + res);
		}
		
		br.close();
		pw.close();
	}
}
