English verb conjugation
CAN GULF

Regular verb: gulf - gulfed - gulfed

Affirmation

Simple form	V-ing form
I can gulf you can gulf he can gulf we can gulf you can gulf they can gulf	I can be gulfing you can be gulfing he can be gulfing we can be gulfing you can be gulfing they can be gulfing
Perfect	V-ing perfect
I can have gulfed you can have gulfed he can have gulfed we can have gulfed you can have gulfed they can have gulfed	I can have been gulfing you can have been gulfing he can have been gulfing we can have been gulfing you can have been gulfing they can have been gulfing

Negation

Simple form	V-ing form
I cannot gulf you cannot gulf he cannot gulf we cannot gulf you cannot gulf they cannot gulf	I cannot be gulfing you cannot be gulfing he cannot be gulfing we cannot be gulfing you cannot be gulfing they cannot be gulfing
Perfect	V-ing perfect
I cannot have gulfed you cannot have gulfed he cannot have gulfed we cannot have gulfed you cannot have gulfed they cannot have gulfed	I cannot have been gulfing you cannot have been gulfing he cannot have been gulfing we cannot have been gulfing you cannot have been gulfing they cannot have been gulfing

Interrogative form

Simple form	V-ing form
can I gulf? can you gulf? can he gulf? can we gulf? can you gulf? can they gulf?	can I be gulfing? can you be gulfing? can he be gulfing? can we be gulfing? can you be gulfing? can they be gulfing?
Perfect	V-ing perfect
can I have gulfed? can you have gulfed? can he have gulfed? can we have gulfed? can you have gulfed? can they have gulfed?	can I have been gulfing? can you have been gulfing? can he have been gulfing? can we have been gulfing? can you have been gulfing? can they have been gulfing?

Interro-negative form

Simple form	V-ing form
can I not gulf? can you not gulf? can he not gulf? can we not gulf? can you not gulf? can they not gulf?	can I not be gulfing? can you not be gulfing? can he not be gulfing? can we not be gulfing? can you not be gulfing? can they not be gulfing?
Perfect	V-ing perfect
can I not have gulfed? can you not have gulfed? can he not have gulfed? can we not have gulfed? can you not have gulfed? can they not have gulfed?	can I not have been gulfing? can you not have been gulfing? can he not have been gulfing? can we not have been gulfing? can you not have been gulfing? can they not have been gulfing?