English verb conjugation
CAN OBSCURE

Regular verb: obscure - obscured - obscured

Affirmation

Simple form	V-ing form
I can obscure you can obscure he can obscure we can obscure you can obscure they can obscure	I can be obscuring you can be obscuring he can be obscuring we can be obscuring you can be obscuring they can be obscuring
Perfect	V-ing perfect
I can have obscured you can have obscured he can have obscured we can have obscured you can have obscured they can have obscured	I can have been obscuring you can have been obscuring he can have been obscuring we can have been obscuring you can have been obscuring they can have been obscuring

Negation

Simple form	V-ing form
I cannot obscure you cannot obscure he cannot obscure we cannot obscure you cannot obscure they cannot obscure	I cannot be obscuring you cannot be obscuring he cannot be obscuring we cannot be obscuring you cannot be obscuring they cannot be obscuring
Perfect	V-ing perfect
I cannot have obscured you cannot have obscured he cannot have obscured we cannot have obscured you cannot have obscured they cannot have obscured	I cannot have been obscuring you cannot have been obscuring he cannot have been obscuring we cannot have been obscuring you cannot have been obscuring they cannot have been obscuring

Interrogative form

Simple form	V-ing form
can I obscure? can you obscure? can he obscure? can we obscure? can you obscure? can they obscure?	can I be obscuring? can you be obscuring? can he be obscuring? can we be obscuring? can you be obscuring? can they be obscuring?
Perfect	V-ing perfect
can I have obscured? can you have obscured? can he have obscured? can we have obscured? can you have obscured? can they have obscured?	can I have been obscuring? can you have been obscuring? can he have been obscuring? can we have been obscuring? can you have been obscuring? can they have been obscuring?

Interro-negative form

Simple form	V-ing form
can I not obscure? can you not obscure? can he not obscure? can we not obscure? can you not obscure? can they not obscure?	can I not be obscuring? can you not be obscuring? can he not be obscuring? can we not be obscuring? can you not be obscuring? can they not be obscuring?
Perfect	V-ing perfect
can I not have obscured? can you not have obscured? can he not have obscured? can we not have obscured? can you not have obscured? can they not have obscured?	can I not have been obscuring? can you not have been obscuring? can he not have been obscuring? can we not have been obscuring? can you not have been obscuring? can they not have been obscuring?