Present participle; Past participle - stooling - stooled Present - stool - stool - stools - stool - stool - stool Past - stooled - stooled - stooled - stooled - stooled - stooled Future - will stool - will stool - will stool - will stool - will stool - will stool Present conditional - would stool - would stool - would stool - would stool - would stool - would stool Present Perfect - have stooled - have stooled - has stooled - have stooled - have stooled - have stooled Past Perfect - had stooled - had stooled - had stooled - had stooled - had stooled - had stooled Future Perfect - will have stooled - will have stooled - will have stooled - will have stooled - will have stooled - will have stooled Past conditional - would have stooled - would have stooled - would have stooled - would have stooled - would have stooled - would have stooled Imperative - - - stool - - - - - - - -