English verb conjugation
CAN BLACKBALL

Regular verb: blackball - blackballed - blackballed

Affirmation

Simple form	V-ing form
I can blackball you can blackball he can blackball we can blackball you can blackball they can blackball	I can be blackballing you can be blackballing he can be blackballing we can be blackballing you can be blackballing they can be blackballing
Perfect	V-ing perfect
I can have blackballed you can have blackballed he can have blackballed we can have blackballed you can have blackballed they can have blackballed	I can have been blackballing you can have been blackballing he can have been blackballing we can have been blackballing you can have been blackballing they can have been blackballing

Negation

Simple form	V-ing form
I cannot blackball you cannot blackball he cannot blackball we cannot blackball you cannot blackball they cannot blackball	I cannot be blackballing you cannot be blackballing he cannot be blackballing we cannot be blackballing you cannot be blackballing they cannot be blackballing
Perfect	V-ing perfect
I cannot have blackballed you cannot have blackballed he cannot have blackballed we cannot have blackballed you cannot have blackballed they cannot have blackballed	I cannot have been blackballing you cannot have been blackballing he cannot have been blackballing we cannot have been blackballing you cannot have been blackballing they cannot have been blackballing

Interrogative form

Simple form	V-ing form
can I blackball? can you blackball? can he blackball? can we blackball? can you blackball? can they blackball?	can I be blackballing? can you be blackballing? can he be blackballing? can we be blackballing? can you be blackballing? can they be blackballing?
Perfect	V-ing perfect
can I have blackballed? can you have blackballed? can he have blackballed? can we have blackballed? can you have blackballed? can they have blackballed?	can I have been blackballing? can you have been blackballing? can he have been blackballing? can we have been blackballing? can you have been blackballing? can they have been blackballing?

Interro-negative form

Simple form	V-ing form
can I not blackball? can you not blackball? can he not blackball? can we not blackball? can you not blackball? can they not blackball?	can I not be blackballing? can you not be blackballing? can he not be blackballing? can we not be blackballing? can you not be blackballing? can they not be blackballing?
Perfect	V-ing perfect
can I not have blackballed? can you not have blackballed? can he not have blackballed? can we not have blackballed? can you not have blackballed? can they not have blackballed?	can I not have been blackballing? can you not have been blackballing? can he not have been blackballing? can we not have been blackballing? can you not have been blackballing? can they not have been blackballing?