Present participle; Past participle - executing - executed Present - execute - execute - executes - execute - execute - execute Past - executed - executed - executed - executed - executed - executed Future - will execute - will execute - will execute - will execute - will execute - will execute Present conditional - would execute - would execute - would execute - would execute - would execute - would execute Present Perfect - have executed - have executed - has executed - have executed - have executed - have executed Past Perfect - had executed - had executed - had executed - had executed - had executed - had executed Future Perfect - will have executed - will have executed - will have executed - will have executed - will have executed - will have executed Past conditional - would have executed - would have executed - would have executed - would have executed - would have executed - would have executed Imperative - - - execute - - - - - - - -