package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class Input {
	BufferedReader reader;
	StringTokenizer st = new StringTokenizer("");


	public Input( BufferedReader reader_ ) { reader = reader_; }


	public Input( InputStream in_ ) {
		reader = new BufferedReader( new InputStreamReader( in_ ) );
	}


	public Input( String fileName ) throws Exception {
		reader = new BufferedReader( new FileReader( new File( fileName ) ) );
	}

	public String getToken() throws IOException {
		while( !st.hasMoreTokens() ) {
			String line = reader.readLine();
			if ( line == null )
				return null;
			st = new StringTokenizer( line );
		}
		return st.nextToken();
	}

	public String getLine() throws IOException {
		String line = reader.readLine();
		return line;
	}
	
	public int getInt() throws Exception {
		int ret = Integer.parseInt( getToken() );
		return ret;
	}
}