English verb conjugation
COULD SWIRL

Regular verb: swirl - swirled - swirled

Affirmation

Simple form	V-ing form
I could swirl you could swirl he could swirl we could swirl you could swirl they could swirl	I could be swirling you could be swirling he could be swirling we could be swirling you could be swirling they could be swirling
Perfect	V-ing perfect
I could have swirled you could have swirled he could have swirled we could have swirled you could have swirled they could have swirled	I could have been swirling you could have been swirling he could have been swirling we could have been swirling you could have been swirling they could have been swirling

Negation

Simple form	V-ing form
I couldn't swirl you couldn't swirl he couldn't swirl we couldn't swirl you couldn't swirl they couldn't swirl	I couldn't be swirling you couldn't be swirling he couldn't be swirling we couldn't be swirling you couldn't be swirling they couldn't be swirling
Perfect	V-ing perfect
I couldn't have swirled you couldn't have swirled he couldn't have swirled we couldn't have swirled you couldn't have swirled they couldn't have swirled	I couldn't have been swirling you couldn't have been swirling he couldn't have been swirling we couldn't have been swirling you couldn't have been swirling they couldn't have been swirling

Interrogative form

Simple form	V-ing form
could I swirl? could you swirl? could he swirl? could we swirl? could you swirl? could they swirl?	could I be swirling? could you be swirling? could he be swirling? could we be swirling? could you be swirling? could they be swirling?
Perfect	V-ing perfect
could I have swirled? could you have swirled? could he have swirled? could we have swirled? could you have swirled? could they have swirled?	could I have been swirling? could you have been swirling? could he have been swirling? could we have been swirling? could you have been swirling? could they have been swirling?

Interro-negative form

Simple form	V-ing form
couldn't I swirl? couldn't you swirl? couldn't he swirl? couldn't we swirl? couldn't you swirl? couldn't they swirl?	couldn't I be swirling? couldn't you be swirling? couldn't he be swirling? couldn't we be swirling? couldn't you be swirling? couldn't they be swirling?
Perfect	V-ing perfect
couldn't I have swirled? couldn't you have swirled? couldn't he have swirled? couldn't we have swirled? couldn't you have swirled? couldn't they have swirled?	couldn't I have been swirling? couldn't you have been swirling? couldn't he have been swirling? couldn't we have been swirling? couldn't you have been swirling? couldn't they have been swirling?