Present participle; Past participle - thieving - thieved Present - thieve - thieve - thieves - thieve - thieve - thieve Past - thieved - thieved - thieved - thieved - thieved - thieved Future - will thieve - will thieve - will thieve - will thieve - will thieve - will thieve Present conditional - would thieve - would thieve - would thieve - would thieve - would thieve - would thieve Present Perfect - have thieved - have thieved - has thieved - have thieved - have thieved - have thieved Past Perfect - had thieved - had thieved - had thieved - had thieved - had thieved - had thieved Future Perfect - will have thieved - will have thieved - will have thieved - will have thieved - will have thieved - will have thieved Past conditional - would have thieved - would have thieved - would have thieved - would have thieved - would have thieved - would have thieved Imperative - - - thieve - - - - - - - -