English verb conjugation
CAN PERTAIN

Regular verb: pertain - pertained - pertained

Affirmation

Simple form	V-ing form
I can pertain you can pertain he can pertain we can pertain you can pertain they can pertain	I can be pertaining you can be pertaining he can be pertaining we can be pertaining you can be pertaining they can be pertaining
Perfect	V-ing perfect
I can have pertained you can have pertained he can have pertained we can have pertained you can have pertained they can have pertained	I can have been pertaining you can have been pertaining he can have been pertaining we can have been pertaining you can have been pertaining they can have been pertaining

Negation

Simple form	V-ing form
I cannot pertain you cannot pertain he cannot pertain we cannot pertain you cannot pertain they cannot pertain	I cannot be pertaining you cannot be pertaining he cannot be pertaining we cannot be pertaining you cannot be pertaining they cannot be pertaining
Perfect	V-ing perfect
I cannot have pertained you cannot have pertained he cannot have pertained we cannot have pertained you cannot have pertained they cannot have pertained	I cannot have been pertaining you cannot have been pertaining he cannot have been pertaining we cannot have been pertaining you cannot have been pertaining they cannot have been pertaining

Interrogative form

Simple form	V-ing form
can I pertain? can you pertain? can he pertain? can we pertain? can you pertain? can they pertain?	can I be pertaining? can you be pertaining? can he be pertaining? can we be pertaining? can you be pertaining? can they be pertaining?
Perfect	V-ing perfect
can I have pertained? can you have pertained? can he have pertained? can we have pertained? can you have pertained? can they have pertained?	can I have been pertaining? can you have been pertaining? can he have been pertaining? can we have been pertaining? can you have been pertaining? can they have been pertaining?

Interro-negative form

Simple form	V-ing form
can I not pertain? can you not pertain? can he not pertain? can we not pertain? can you not pertain? can they not pertain?	can I not be pertaining? can you not be pertaining? can he not be pertaining? can we not be pertaining? can you not be pertaining? can they not be pertaining?
Perfect	V-ing perfect
can I not have pertained? can you not have pertained? can he not have pertained? can we not have pertained? can you not have pertained? can they not have pertained?	can I not have been pertaining? can you not have been pertaining? can he not have been pertaining? can we not have been pertaining? can you not have been pertaining? can they not have been pertaining?