import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package dom.zar.jam.qualifications;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int inputLines = in.nextInt();
		for (int i = 0; i < inputLines;) {
			int a = in.nextInt();
			int b = in.nextInt();						
			System.out.println("Case #" + ++i + ": "
					+ result(a, b));
		}
	}
	
	private static int result(int a, int b) {
		int size = b - a + 1;
		int[] nums = new int[size];
		for (int i = 0; i < size; ++i) nums[i] = a + i;
		
		int counter = 0;
		for (int i = 0; i < size; ++i) {
			if (nums[i] > -1) {
				counter += rotate(nums[i], a, b, nums);
				nums[i] = -1;
			}
		}		
		return counter;
	}
	
	private static int rotate(Integer n, int a, int b, int[] nums) {
		String valString = n.toString();
		int length = valString.length();
		valString = valString + valString;
		int counter = 0;
		for (int i = 1; i < length; ++i) {
			int rotated = Integer.parseInt(
					valString.substring(i, i + length));
			if (rotated > n && rotated <= b
					&& nums[rotated - a] != -1) {
				counter++;
				nums[rotated - a] = -1;
			}
		}
		return (counter * (counter + 1)) >> 1;
	}
}
