Present participle; Past participle - butting - butted Present - butt - butt - butts - butt - butt - butt Past - butted - butted - butted - butted - butted - butted Future - will butt - will butt - will butt - will butt - will butt - will butt Present conditional - would butt - would butt - would butt - would butt - would butt - would butt Present Perfect - have butted - have butted - has butted - have butted - have butted - have butted Past Perfect - had butted - had butted - had butted - had butted - had butted - had butted Future Perfect - will have butted - will have butted - will have butted - will have butted - will have butted - will have butted Past conditional - would have butted - would have butted - would have butted - would have butted - would have butted - would have butted Imperative - - - butt - - - - - - - -