English verb conjugation
COULD CATERWAUL

Regular verb: caterwaul - caterwauled - caterwauled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

Simple form	V-ing form
couldn't I caterwaul? couldn't you caterwaul? couldn't he caterwaul? couldn't we caterwaul? couldn't you caterwaul? couldn't they caterwaul?	couldn't I be caterwauling? couldn't you be caterwauling? couldn't he be caterwauling? couldn't we be caterwauling? couldn't you be caterwauling? couldn't they be caterwauling?
Perfect	V-ing perfect
couldn't I have caterwauled? couldn't you have caterwauled? couldn't he have caterwauled? couldn't we have caterwauled? couldn't you have caterwauled? couldn't they have caterwauled?	couldn't I have been caterwauling? couldn't you have been caterwauling? couldn't he have been caterwauling? couldn't we have been caterwauling? couldn't you have been caterwauling? couldn't they have been caterwauling?