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 can't gulf you can't gulf he can't gulf we can't gulf you can't gulf they can't gulf	I can't be gulfing you can't be gulfing he can't be gulfing we can't be gulfing you can't be gulfing they can't be gulfing
Perfect	V-ing perfect
I can't have gulfed you can't have gulfed he can't have gulfed we can't have gulfed you can't have gulfed they can't have gulfed	I can't have been gulfing you can't have been gulfing he can't have been gulfing we can't have been gulfing you can't have been gulfing they can't 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't I gulf? can't you gulf? can't he gulf? can't we gulf? can't you gulf? can't they gulf?	can't I be gulfing? can't you be gulfing? can't he be gulfing? can't we be gulfing? can't you be gulfing? can't they be gulfing?
Perfect	V-ing perfect
can't I have gulfed? can't you have gulfed? can't he have gulfed? can't we have gulfed? can't you have gulfed? can't they have gulfed?	can't I have been gulfing? can't you have been gulfing? can't he have been gulfing? can't we have been gulfing? can't you have been gulfing? can't they have been gulfing?