English verb conjugation
COULD SWAMP

Regular verb: swamp - swamped - swamped

Affirmation

Simple form	V-ing form
I could swamp you could swamp he could swamp we could swamp you could swamp they could swamp	I could be swamping you could be swamping he could be swamping we could be swamping you could be swamping they could be swamping
Perfect	V-ing perfect
I could have swamped you could have swamped he could have swamped we could have swamped you could have swamped they could have swamped	I could have been swamping you could have been swamping he could have been swamping we could have been swamping you could have been swamping they could have been swamping

Negation

Simple form	V-ing form
I couldn't swamp you couldn't swamp he couldn't swamp we couldn't swamp you couldn't swamp they couldn't swamp	I couldn't be swamping you couldn't be swamping he couldn't be swamping we couldn't be swamping you couldn't be swamping they couldn't be swamping
Perfect	V-ing perfect
I couldn't have swamped you couldn't have swamped he couldn't have swamped we couldn't have swamped you couldn't have swamped they couldn't have swamped	I couldn't have been swamping you couldn't have been swamping he couldn't have been swamping we couldn't have been swamping you couldn't have been swamping they couldn't have been swamping

Interrogative form

Simple form	V-ing form
could I swamp? could you swamp? could he swamp? could we swamp? could you swamp? could they swamp?	could I be swamping? could you be swamping? could he be swamping? could we be swamping? could you be swamping? could they be swamping?
Perfect	V-ing perfect
could I have swamped? could you have swamped? could he have swamped? could we have swamped? could you have swamped? could they have swamped?	could I have been swamping? could you have been swamping? could he have been swamping? could we have been swamping? could you have been swamping? could they have been swamping?

Interro-negative form

Simple form	V-ing form
couldn't I swamp? couldn't you swamp? couldn't he swamp? couldn't we swamp? couldn't you swamp? couldn't they swamp?	couldn't I be swamping? couldn't you be swamping? couldn't he be swamping? couldn't we be swamping? couldn't you be swamping? couldn't they be swamping?
Perfect	V-ing perfect
couldn't I have swamped? couldn't you have swamped? couldn't he have swamped? couldn't we have swamped? couldn't you have swamped? couldn't they have swamped?	couldn't I have been swamping? couldn't you have been swamping? couldn't he have been swamping? couldn't we have been swamping? couldn't you have been swamping? couldn't they have been swamping?