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.LinkedList;
public class ProblemC {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int T = scan.nextInt(); //number of cases
		scan.nextLine();
		
		for (int k = 1; k <= T; k++) {
			int A = scan.nextInt();
			int B = scan.nextInt();

			int count = 0;
			for (int i = A; i <= B; i++) {
				String original = ""+i;
				LinkedList<Integer> recycleList = new LinkedList<Integer>();
				for (int j = 1; j< original.length(); j++) { //where to rotate from
					if (original.charAt(j) < original.charAt(0)) //eliminate some obvious "decreasing" cases
						continue;								 //since they'll be duplicated anyway.
					String newstr = original.substring(j) + original.substring(0,j);
					int newint = Integer.parseInt(newstr);

					if (newint > i && newint <= B) {//don't count duplicates or pairs out of range
						if (!recycleList.contains(newint)) {//no duplicate recycles
							count++;
							recycleList.add(newint);
						}
					}
				}
			}
			//System.err.println("count: " + count);
			int solution = count;

			System.out.println("Case #" + k + ": " + solution);
		}
	}

}
