Present participle; Past participle - lessoning - lessoned Present - lesson - lesson - lessons - lesson - lesson - lesson Past - lessoned - lessoned - lessoned - lessoned - lessoned - lessoned Future - will lesson - will lesson - will lesson - will lesson - will lesson - will lesson Present conditional - would lesson - would lesson - would lesson - would lesson - would lesson - would lesson Present Perfect - have lessoned - have lessoned - has lessoned - have lessoned - have lessoned - have lessoned Past Perfect - had lessoned - had lessoned - had lessoned - had lessoned - had lessoned - had lessoned Future Perfect - will have lessoned - will have lessoned - will have lessoned - will have lessoned - will have lessoned - will have lessoned Past conditional - would have lessoned - would have lessoned - would have lessoned - would have lessoned - would have lessoned - would have lessoned Imperative - - - lesson - - - - - - - -