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 can't bull you can't bull he can't bull we can't bull you can't bull they can't bull	I can't be bulling you can't be bulling he can't be bulling we can't be bulling you can't be bulling they can't be bulling
Perfect	V-ing perfect
I can't have bulled you can't have bulled he can't have bulled we can't have bulled you can't have bulled they can't have bulled	I can't have been bulling you can't have been bulling he can't have been bulling we can't have been bulling you can't have been bulling they can't 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't I bull? can't you bull? can't he bull? can't we bull? can't you bull? can't they bull?	can't I be bulling? can't you be bulling? can't he be bulling? can't we be bulling? can't you be bulling? can't they be bulling?
Perfect	V-ing perfect
can't I have bulled? can't you have bulled? can't he have bulled? can't we have bulled? can't you have bulled? can't they have bulled?	can't I have been bulling? can't you have been bulling? can't he have been bulling? can't we have been bulling? can't you have been bulling? can't they have been bulling?