Present participle; Past participle - trenching - trenched Present - trench - trench - trenches - trench - trench - trench Past - trenched - trenched - trenched - trenched - trenched - trenched Future - will trench - will trench - will trench - will trench - will trench - will trench Present conditional - would trench - would trench - would trench - would trench - would trench - would trench Present Perfect - have trenched - have trenched - has trenched - have trenched - have trenched - have trenched Past Perfect - had trenched - had trenched - had trenched - had trenched - had trenched - had trenched Future Perfect - will have trenched - will have trenched - will have trenched - will have trenched - will have trenched - will have trenched Past conditional - would have trenched - would have trenched - would have trenched - would have trenched - would have trenched - would have trenched Imperative - - - trench - - - - - - - -