import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.*;
import java.util.*;
public class RecycledNumbers
{
	public static void main(String args[]) throws IOException
	{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int T = Integer.parseInt(br.readLine());
		int[][] ab = new int[T][2];
		StringTokenizer st = null;
		for (int i=0; i<T; i++)
		{
			st = new StringTokenizer(br.readLine());
			ab[i][0]=Integer.parseInt(st.nextToken());
			ab[i][1]=Integer.parseInt(st.nextToken());
		}
		for (int i=0; i<T; i++)
		{
			System.out.print("Case #"+(i+1)+": ");
			int c=0;
			int dig = (int)Math.log10(ab[i][0]);
			for (int j=ab[i][0]; j<=ab[i][1]; j++)
			{
				int newno=j;
				do
				{
					int last = newno%10;
					newno/=10;
					newno = (int) (last*Math.pow(10,dig) + newno);
					if (newno == j)
						break;
					if (newno <= ab[i][1] && newno >= ab[i][0] && j<newno)
						c++;
				} while (true);
			}
			System.out.println(c);
		}
	}
}
