English verb conjugation
CAN BLACK

Regular verb: black - blacked - blacked

Affirmation

Simple form	V-ing form
I can black you can black he can black we can black you can black they can black	I can be blacking you can be blacking he can be blacking we can be blacking you can be blacking they can be blacking
Perfect	V-ing perfect
I can have blacked you can have blacked he can have blacked we can have blacked you can have blacked they can have blacked	I can have been blacking you can have been blacking he can have been blacking we can have been blacking you can have been blacking they can have been blacking

Negation

Simple form	V-ing form
I can't black you can't black he can't black we can't black you can't black they can't black	I can't be blacking you can't be blacking he can't be blacking we can't be blacking you can't be blacking they can't be blacking
Perfect	V-ing perfect
I can't have blacked you can't have blacked he can't have blacked we can't have blacked you can't have blacked they can't have blacked	I can't have been blacking you can't have been blacking he can't have been blacking we can't have been blacking you can't have been blacking they can't have been blacking

Interrogative form

Simple form	V-ing form
can I black? can you black? can he black? can we black? can you black? can they black?	can I be blacking? can you be blacking? can he be blacking? can we be blacking? can you be blacking? can they be blacking?
Perfect	V-ing perfect
can I have blacked? can you have blacked? can he have blacked? can we have blacked? can you have blacked? can they have blacked?	can I have been blacking? can you have been blacking? can he have been blacking? can we have been blacking? can you have been blacking? can they have been blacking?

Interro-negative form

Simple form	V-ing form
can't I black? can't you black? can't he black? can't we black? can't you black? can't they black?	can't I be blacking? can't you be blacking? can't he be blacking? can't we be blacking? can't you be blacking? can't they be blacking?
Perfect	V-ing perfect
can't I have blacked? can't you have blacked? can't he have blacked? can't we have blacked? can't you have blacked? can't they have blacked?	can't I have been blacking? can't you have been blacking? can't he have been blacking? can't we have been blacking? can't you have been blacking? can't they have been blacking?