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();
		}
	}
}

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.HashSet;

public class RecycledPairs {
	public static void main(String[] args) {
		
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			HashSet<Integer> seen = new HashSet<Integer>();
			
			int T = Integer.parseInt(br.readLine());
			for (int t=1; t<=T; t++) {
				String[] nums = br.readLine().split("\\s+");
				int A = Integer.parseInt(nums[0]);
				int B = Integer.parseInt(nums[1]);
				int tally = 0;
				for (int i=A; i<=B; i++) {
					String istr = Integer.toString(i);
					seen = new HashSet<Integer>();
					for (int j=1; j<istr.length(); j++) {
						istr = istr.substring(1) + istr.substring(0,1);
						int newi = Integer.parseInt(istr);
						//System.out.println(newi);
						if ((newi > i) && (newi <= B) && (newi >= A)) {
							if (seen.add(newi)) {
								tally++;
								//System.out.println(i + " " + newi);
							}
						}
					}
				}
				System.out.println("Case #" + t + ": " + tally);
			}
			
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
		
	}
}
