Present participle; Past participle - commercing - commerced Present - commerce - commerce - commerces - commerce - commerce - commerce Past - commerced - commerced - commerced - commerced - commerced - commerced Future - will commerce - will commerce - will commerce - will commerce - will commerce - will commerce Present conditional - would commerce - would commerce - would commerce - would commerce - would commerce - would commerce Present Perfect - have commerced - have commerced - has commerced - have commerced - have commerced - have commerced Past Perfect - had commerced - had commerced - had commerced - had commerced - had commerced - had commerced Future Perfect - will have commerced - will have commerced - will have commerced - will have commerced - will have commerced - will have commerced Past conditional - would have commerced - would have commerced - would have commerced - would have commerced - would have commerced - would have commerced Imperative - - - commerce - - - - - - - -