English verb conjugation
CAN CATERWAUL

Regular verb: caterwaul - caterwauled - caterwauled

Affirmation

Simple form	V-ing form
I can caterwaul you can caterwaul he can caterwaul we can caterwaul you can caterwaul they can caterwaul	I can be caterwauling you can be caterwauling he can be caterwauling we can be caterwauling you can be caterwauling they can be caterwauling
Perfect	V-ing perfect
I can have caterwauled you can have caterwauled he can have caterwauled we can have caterwauled you can have caterwauled they can have caterwauled	I can have been caterwauling you can have been caterwauling he can have been caterwauling we can have been caterwauling you can have been caterwauling they can have been caterwauling

Negation

Simple form	V-ing form
I cannot caterwaul you cannot caterwaul he cannot caterwaul we cannot caterwaul you cannot caterwaul they cannot caterwaul	I cannot be caterwauling you cannot be caterwauling he cannot be caterwauling we cannot be caterwauling you cannot be caterwauling they cannot be caterwauling
Perfect	V-ing perfect
I cannot have caterwauled you cannot have caterwauled he cannot have caterwauled we cannot have caterwauled you cannot have caterwauled they cannot have caterwauled	I cannot have been caterwauling you cannot have been caterwauling he cannot have been caterwauling we cannot have been caterwauling you cannot have been caterwauling they cannot have been caterwauling

Interrogative form

Simple form	V-ing form
can I caterwaul? can you caterwaul? can he caterwaul? can we caterwaul? can you caterwaul? can they caterwaul?	can I be caterwauling? can you be caterwauling? can he be caterwauling? can we be caterwauling? can you be caterwauling? can they be caterwauling?
Perfect	V-ing perfect
can I have caterwauled? can you have caterwauled? can he have caterwauled? can we have caterwauled? can you have caterwauled? can they have caterwauled?	can I have been caterwauling? can you have been caterwauling? can he have been caterwauling? can we have been caterwauling? can you have been caterwauling? can they have been caterwauling?

Interro-negative form

Simple form	V-ing form
can I not caterwaul? can you not caterwaul? can he not caterwaul? can we not caterwaul? can you not caterwaul? can they not caterwaul?	can I not be caterwauling? can you not be caterwauling? can he not be caterwauling? can we not be caterwauling? can you not be caterwauling? can they not be caterwauling?
Perfect	V-ing perfect
can I not have caterwauled? can you not have caterwauled? can he not have caterwauled? can we not have caterwauled? can you not have caterwauled? can they not have caterwauled?	can I not have been caterwauling? can you not have been caterwauling? can he not have been caterwauling? can we not have been caterwauling? can you not have been caterwauling? can they not have been caterwauling?