Present participle; Past participle - coopering - coopered Present - cooper - cooper - coopers - cooper - cooper - cooper Past - coopered - coopered - coopered - coopered - coopered - coopered Future - will cooper - will cooper - will cooper - will cooper - will cooper - will cooper Present conditional - would cooper - would cooper - would cooper - would cooper - would cooper - would cooper Present Perfect - have coopered - have coopered - has coopered - have coopered - have coopered - have coopered Past Perfect - had coopered - had coopered - had coopered - had coopered - had coopered - had coopered Future Perfect - will have coopered - will have coopered - will have coopered - will have coopered - will have coopered - will have coopered Past conditional - would have coopered - would have coopered - would have coopered - would have coopered - would have coopered - would have coopered Imperative - - - cooper - - - - - - - -