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.*;
import java.nio.charset.Charset;
import java.nio.file.Path;
import java.util.ArrayList;

public class ReadWriter
{
    public ArrayList<String> readFile(String path){
        File file = new File(path);
        ArrayList<String> strings = new ArrayList<String>();
        BufferedReader reader = null;
        try{
            reader = new BufferedReader(new FileReader(file));
            String text = null;
            while((text=reader.readLine())!=null){
                strings.add(text);
            }
            return strings;
        }
        catch(Exception e){
            e.printStackTrace();
        }
        finally{
            try{
                if(reader!=null){
                    reader.close();
                }
            }
            catch(Exception e){
                e.printStackTrace();
            }
        }
        return null;
    }
    public void writeFile(ArrayList<String> list, String path){
        BufferedWriter out=null;
        try{
            FileWriter fstream = new FileWriter(path);
            out = new BufferedWriter(fstream);
            for(String s : list){
                out.write(s);
                out.write("\r\n");
            }
        }
        catch(Exception e){
            e.printStackTrace();
        }
        finally{
            try{
                if(out!=null){
                    out.close();
                }
            }
            catch(Exception e){
                e.printStackTrace();
            }
        }
    }
}
