Present participle; Past participle - libel(l)ing - libel(l)ed Present - libel - libel - libels - libel - libel - libel Past - libel(l)ed - libel(l)ed - libel(l)ed - libel(l)ed - libel(l)ed - libel(l)ed Future - will libel - will libel - will libel - will libel - will libel - will libel Present conditional - would libel - would libel - would libel - would libel - would libel - would libel Present Perfect - have libel(l)ed - have libel(l)ed - has libel(l)ed - have libel(l)ed - have libel(l)ed - have libel(l)ed Past Perfect - had libel(l)ed - had libel(l)ed - had libel(l)ed - had libel(l)ed - had libel(l)ed - had libel(l)ed Future Perfect - will have libel(l)ed - will have libel(l)ed - will have libel(l)ed - will have libel(l)ed - will have libel(l)ed - will have libel(l)ed Past conditional - would have libel(l)ed - would have libel(l)ed - would have libel(l)ed - would have libel(l)ed - would have libel(l)ed - would have libel(l)ed Imperative - - - libel - - - - - - - -