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();
		}
	}
}

// usage: java c infile > outfile
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Set;
import java.util.HashSet;

public class c
{
	public static void main(String[] args) throws Exception
	{
		String infile = args[0];
		
		BufferedReader reader = new BufferedReader(new FileReader(infile));
		int T = Integer.parseInt(reader.readLine());
		for (int t = 1; t <= T; t++)
		{
			Set<String> pairs = new HashSet<String>();
			String[] inputs = reader.readLine().split(" ");
			int A = Integer.parseInt(inputs[0]);
			int B = Integer.parseInt(inputs[1]);
			int length = inputs[0].length();
			//System.out.println("test = " + A + ", " + B + ", " + length);
			
			int total = 0;
			for (int i = A; i <= B; i++)
			{
				String trial = "" + i;
				//System.out.println("i = " + i);
				for (int n = 1; n < length; n++)
				{
					int j = Integer.parseInt(trial.substring(n) + trial.substring(0, n));
					//System.out.println(trial.substring(n) + ":" + trial.substring(0, n));
					if (trial.charAt(n) == '0')
					{
						continue;
					}
					
					String pair = i + " " + j;
					if (i < j && j <= B && !pairs.contains(pair))
					{
						total++;
						pairs.add(pair);
					}
				}
			}
			
			System.out.println("Case #" + t + ": " + total);
		}
		reader.close();
	}
}
