Present participle; Past participle - surfing - surfed Present - surf - surf - surfs - surf - surf - surf Past - surfed - surfed - surfed - surfed - surfed - surfed Future - will surf - will surf - will surf - will surf - will surf - will surf Present conditional - would surf - would surf - would surf - would surf - would surf - would surf Present Perfect - have surfed - have surfed - has surfed - have surfed - have surfed - have surfed Past Perfect - had surfed - had surfed - had surfed - had surfed - had surfed - had surfed Future Perfect - will have surfed - will have surfed - will have surfed - will have surfed - will have surfed - will have surfed Past conditional - would have surfed - would have surfed - would have surfed - would have surfed - would have surfed - would have surfed Imperative - - - surf - - - - - - - -