English verb conjugation
CAN BULL

Regular verb: bull - bulled - bulled

Affirmation

Simple form	V-ing form
I can bull you can bull he can bull we can bull you can bull they can bull	I can be bulling you can be bulling he can be bulling we can be bulling you can be bulling they can be bulling
Perfect	V-ing perfect
I can have bulled you can have bulled he can have bulled we can have bulled you can have bulled they can have bulled	I can have been bulling you can have been bulling he can have been bulling we can have been bulling you can have been bulling they can have been bulling

Negation

Simple form	V-ing form
I cannot bull you cannot bull he cannot bull we cannot bull you cannot bull they cannot bull	I cannot be bulling you cannot be bulling he cannot be bulling we cannot be bulling you cannot be bulling they cannot be bulling
Perfect	V-ing perfect
I cannot have bulled you cannot have bulled he cannot have bulled we cannot have bulled you cannot have bulled they cannot have bulled	I cannot have been bulling you cannot have been bulling he cannot have been bulling we cannot have been bulling you cannot have been bulling they cannot have been bulling

Interrogative form

Simple form	V-ing form
can I bull? can you bull? can he bull? can we bull? can you bull? can they bull?	can I be bulling? can you be bulling? can he be bulling? can we be bulling? can you be bulling? can they be bulling?
Perfect	V-ing perfect
can I have bulled? can you have bulled? can he have bulled? can we have bulled? can you have bulled? can they have bulled?	can I have been bulling? can you have been bulling? can he have been bulling? can we have been bulling? can you have been bulling? can they have been bulling?

Interro-negative form

Simple form	V-ing form
can I not bull? can you not bull? can he not bull? can we not bull? can you not bull? can they not bull?	can I not be bulling? can you not be bulling? can he not be bulling? can we not be bulling? can you not be bulling? can they not be bulling?
Perfect	V-ing perfect
can I not have bulled? can you not have bulled? can he not have bulled? can we not have bulled? can you not have bulled? can they not have bulled?	can I not have been bulling? can you not have been bulling? can he not have been bulling? can we not have been bulling? can you not have been bulling? can they not have been bulling?