English verb conjugation
COULD SCARF

Regular verb: scarf - scarfed - scarfed

Affirmation

Simple form	V-ing form
I could scarf you could scarf he could scarf we could scarf you could scarf they could scarf	I could be scarfing you could be scarfing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he scarf? could we scarf? could you scarf? could they scarf?	could I be scarfing? could you be scarfing? could he 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 he 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 he 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 he 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 he 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 he 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 he not have been scarfing? could we not have been scarfing? could you not have been scarfing? could they not have been scarfing?