import java.io.*;
import java.util.*;
 
@SuppressWarnings("unused")
public class Main {
	public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] validInputLine = inputValidator(br.readLine().split(" "));
        for ( String s : validInputLine) {
        	System.out.println(s);
        }      
    }
    static String[] inputValidator(String[] line) {
    	for ( int i = 0; i < line.length; i++) {
    			line[i].replaceAll("[^a-zA-Z]", "");
    			line[i].toLowerCase();
    	}
        return line;
    }
}
 

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QSBkb2cgaXMgYW4gYW5pbWFsLiBBbmltYWxzIGFyZSBub3QgcGVvcGxlLg==

A dog is an animal. Animals are not people.