can pertain
Regular verb: pertain - pertained- pertained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pertain
you can pertain
she can pertain
we can pertain
you can pertain
they can pertain 	I can be pertaining
you can be pertaining
she can be pertaining
we can be pertaining
you can be pertaining
they can be pertaining	I can have pertained
you can have pertained
she 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
she 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 	Perfect 	V-ing perfect 	
I can't pertain
you can't pertain
she 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
she can't be pertaining
we can't be pertaining
you can't be pertaining
they can't be pertaining	I can't have pertained
you can't have pertained
she 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
she 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 	Perfect 	V-ing perfect 	
can I pertain?
can you pertain?
can she pertain?
can we pertain?
can you pertain?
can they pertain? 	can I be pertaining?
can you be pertaining?
can she be pertaining?
can we be pertaining?
can you be pertaining?
can they be pertaining? 	can I have pertained?
can you have pertained?
can she 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 she 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 	Perfect 	V-ing perfect 	
can't I pertain?
can't you pertain?
can't she 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 she be pertaining?
can't we be pertaining?
can't you be pertaining?
can't they be pertaining? 	can't I have pertained?
can't you have pertained?
can't she 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 she have been pertaining?
can't we have been pertaining?
can't you have been pertaining?
can't they have been pertaining?