English verb conjugation
CAN SCARF

Regular verb: scarf - scarfed - scarfed

Affirmation

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

Negation

Simple form	V-ing form
I cannot scarf you cannot scarf he cannot scarf we cannot scarf you cannot scarf they cannot scarf	I cannot be scarfing you cannot be scarfing he cannot be scarfing we cannot be scarfing you cannot be scarfing they cannot be scarfing
Perfect	V-ing perfect
I cannot have scarfed you cannot have scarfed he cannot have scarfed we cannot have scarfed you cannot have scarfed they cannot have scarfed	I cannot have been scarfing you cannot have been scarfing he cannot have been scarfing we cannot have been scarfing you cannot have been scarfing they cannot have been scarfing

Interrogative form

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

Interro-negative form

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