Present participle; Past participle - threading - threaded Present - thread - thread - threads - thread - thread - thread Past - threaded - threaded - threaded - threaded - threaded - threaded Future - will thread - will thread - will thread - will thread - will thread - will thread Present conditional - would thread - would thread - would thread - would thread - would thread - would thread Present Perfect - have threaded - have threaded - has threaded - have threaded - have threaded - have threaded Past Perfect - had threaded - had threaded - had threaded - had threaded - had threaded - had threaded Future Perfect - will have threaded - will have threaded - will have threaded - will have threaded - will have threaded - will have threaded Past conditional - would have threaded - would have threaded - would have threaded - would have threaded - would have threaded - would have threaded Imperative - - - thread - - - - - - - -