English verb conjugation
COULD SCARF

Regular verb: scarf - scarfed - scarfed

Affirmation

Simple form	V-ing form
I could scarf you could scarf she could scarf we could scarf you could scarf they could scarf	I could be scarfing you could be scarfing she could be scarfing we could be scarfing you could be scarfing they could be scarfing
Perfect	V-ing perfect
I could have scarfed you could have scarfed she could have scarfed we could have scarfed you could have scarfed they could have scarfed	I could have been scarfing you could have been scarfing she could have been scarfing we could have been scarfing you could have been scarfing they could have been scarfing

Negation

Simple form	V-ing form
I could not scarf you could not scarf she could not scarf we could not scarf you could not scarf they could not scarf	I could not be scarfing you could not be scarfing she could not be scarfing we could not be scarfing you could not be scarfing they could not be scarfing
Perfect	V-ing perfect
I could not have scarfed you could not have scarfed she could not have scarfed we could not have scarfed you could not have scarfed they could not have scarfed	I could not have been scarfing you could not have been scarfing she could not have been scarfing we could not have been scarfing you could not have been scarfing they could not have been scarfing

Interrogative form

Simple form	V-ing form
could I scarf? could you scarf? could she scarf? could we scarf? could you scarf? could they scarf?	could I be scarfing? could you be scarfing? could she be scarfing? could we be scarfing? could you be scarfing? could they be scarfing?
Perfect	V-ing perfect
could I have scarfed? could you have scarfed? could she have scarfed? could we have scarfed? could you have scarfed? could they have scarfed?	could I have been scarfing? could you have been scarfing? could she have been scarfing? could we have been scarfing? could you have been scarfing? could they have been scarfing?

Interro-negative form

Simple form	V-ing form
could I not scarf? could you not scarf? could she not scarf? could we not scarf? could you not scarf? could they not scarf?	could I not be scarfing? could you not be scarfing? could she not be scarfing? could we not be scarfing? could you not be scarfing? could they not be scarfing?
Perfect	V-ing perfect
could I not have scarfed? could you not have scarfed? could she not have scarfed? could we not have scarfed? could you not have scarfed? could they not have scarfed?	could I not have been scarfing? could you not have been scarfing? could she not have been scarfing? could we not have been scarfing? could you not have been scarfing? could they not have been scarfing?