Present participle; Past participle - nailing - nailed Present - nail - nail - nails - nail - nail - nail Past - nailed - nailed - nailed - nailed - nailed - nailed Future - will nail - will nail - will nail - will nail - will nail - will nail Present conditional - would nail - would nail - would nail - would nail - would nail - would nail Present Perfect - have nailed - have nailed - has nailed - have nailed - have nailed - have nailed Past Perfect - had nailed - had nailed - had nailed - had nailed - had nailed - had nailed Future Perfect - will have nailed - will have nailed - will have nailed - will have nailed - will have nailed - will have nailed Past conditional - would have nailed - would have nailed - would have nailed - would have nailed - would have nailed - would have nailed Imperative - - - nail - - - - - - - -