Present participle; Past participle - houseboating - houseboated Present - houseboat - houseboat - houseboats - houseboat - houseboat - houseboat Past - houseboated - houseboated - houseboated - houseboated - houseboated - houseboated Future - will houseboat - will houseboat - will houseboat - will houseboat - will houseboat - will houseboat Present conditional - would houseboat - would houseboat - would houseboat - would houseboat - would houseboat - would houseboat Present Perfect - have houseboated - have houseboated - has houseboated - have houseboated - have houseboated - have houseboated Past Perfect - had houseboated - had houseboated - had houseboated - had houseboated - had houseboated - had houseboated Future Perfect - will have houseboated - will have houseboated - will have houseboated - will have houseboated - will have houseboated - will have houseboated Past conditional - would have houseboated - would have houseboated - would have houseboated - would have houseboated - would have houseboated - would have houseboated Imperative - - - houseboat - - - - - - - -