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 can't pertain you can't pertain he can't pertain we can't pertain you can't pertain they can't pertain	I can't be pertaining you can't be pertaining he can't be pertaining we can't be pertaining you can't be pertaining they can't be pertaining
Perfect	V-ing perfect
I can't have pertained you can't have pertained he can't have pertained we can't have pertained you can't have pertained they can't have pertained	I can't have been pertaining you can't have been pertaining he can't have been pertaining we can't have been pertaining you can't have been pertaining they can't 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't I pertain? can't you pertain? can't he pertain? can't we pertain? can't you pertain? can't they pertain?	can't I be pertaining? can't you be pertaining? can't he be pertaining? can't we be pertaining? can't you be pertaining? can't they be pertaining?
Perfect	V-ing perfect
can't I have pertained? can't you have pertained? can't he have pertained? can't we have pertained? can't you have pertained? can't they have pertained?	can't I have been pertaining? can't you have been pertaining? can't he have been pertaining? can't we have been pertaining? can't you have been pertaining? can't they have been pertaining?