English verb conjugation
COULD INGULF

Regular verb: ingulf - ingulfed - ingulfed

Affirmation

Simple form	V-ing form
I could ingulf you could ingulf he could ingulf we could ingulf you could ingulf they could ingulf	I could be ingulfing you could be ingulfing he could be ingulfing we could be ingulfing you could be ingulfing they could be ingulfing
Perfect	V-ing perfect
I could have ingulfed you could have ingulfed he could have ingulfed we could have ingulfed you could have ingulfed they could have ingulfed	I could have been ingulfing you could have been ingulfing he could have been ingulfing we could have been ingulfing you could have been ingulfing they could have been ingulfing

Negation

Simple form	V-ing form
I couldn't ingulf you couldn't ingulf he couldn't ingulf we couldn't ingulf you couldn't ingulf they couldn't ingulf	I couldn't be ingulfing you couldn't be ingulfing he couldn't be ingulfing we couldn't be ingulfing you couldn't be ingulfing they couldn't be ingulfing
Perfect	V-ing perfect
I couldn't have ingulfed you couldn't have ingulfed he couldn't have ingulfed we couldn't have ingulfed you couldn't have ingulfed they couldn't have ingulfed	I couldn't have been ingulfing you couldn't have been ingulfing he couldn't have been ingulfing we couldn't have been ingulfing you couldn't have been ingulfing they couldn't have been ingulfing

Interrogative form

Simple form	V-ing form
could I ingulf? could you ingulf? could he ingulf? could we ingulf? could you ingulf? could they ingulf?	could I be ingulfing? could you be ingulfing? could he be ingulfing? could we be ingulfing? could you be ingulfing? could they be ingulfing?
Perfect	V-ing perfect
could I have ingulfed? could you have ingulfed? could he have ingulfed? could we have ingulfed? could you have ingulfed? could they have ingulfed?	could I have been ingulfing? could you have been ingulfing? could he have been ingulfing? could we have been ingulfing? could you have been ingulfing? could they have been ingulfing?

Interro-negative form

Simple form	V-ing form
couldn't I ingulf? couldn't you ingulf? couldn't he ingulf? couldn't we ingulf? couldn't you ingulf? couldn't they ingulf?	couldn't I be ingulfing? couldn't you be ingulfing? couldn't he be ingulfing? couldn't we be ingulfing? couldn't you be ingulfing? couldn't they be ingulfing?
Perfect	V-ing perfect
couldn't I have ingulfed? couldn't you have ingulfed? couldn't he have ingulfed? couldn't we have ingulfed? couldn't you have ingulfed? couldn't they have ingulfed?	couldn't I have been ingulfing? couldn't you have been ingulfing? couldn't he have been ingulfing? couldn't we have been ingulfing? couldn't you have been ingulfing? couldn't they have been ingulfing?