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

class WordReader {
  private Scanner in ;

  WordReader (Readable in) {
    this.in = new Scanner(in) ;
    this.in.useDelimiter("[^\\p{L}]+") ;
  }

  String read() {
    if (in.hasNext()) {
      return in.next() ;
    } else {
      return null ;
    }
  }

  void close() { in.close() ; }

  public static void main (String []  arg) {
    WordReader in = new WordReader (new InputStreamReader(System.in)) ;

    String word ;
    while ((word = in.read()) != null) {
      System.out.println(word) ;
    }    
  }
}