English verb conjugation
COULD APPERTAIN

Regular verb: appertain - appertained - appertained

Affirmation

Simple form	V-ing form
I could appertain you could appertain he could appertain we could appertain you could appertain they could appertain	I could be appertaining you could be appertaining he could be appertaining we could be appertaining you could be appertaining they could be appertaining
Perfect	V-ing perfect
I could have appertained you could have appertained he could have appertained we could have appertained you could have appertained they could have appertained	I could have been appertaining you could have been appertaining he could have been appertaining we could have been appertaining you could have been appertaining they could have been appertaining

Negation

Simple form	V-ing form
I couldn't appertain you couldn't appertain he couldn't appertain we couldn't appertain you couldn't appertain they couldn't appertain	I couldn't be appertaining you couldn't be appertaining he couldn't be appertaining we couldn't be appertaining you couldn't be appertaining they couldn't be appertaining
Perfect	V-ing perfect
I couldn't have appertained you couldn't have appertained he couldn't have appertained we couldn't have appertained you couldn't have appertained they couldn't have appertained	I couldn't have been appertaining you couldn't have been appertaining he couldn't have been appertaining we couldn't have been appertaining you couldn't have been appertaining they couldn't have been appertaining

Interrogative form

Simple form	V-ing form
could I appertain? could you appertain? could he appertain? could we appertain? could you appertain? could they appertain?	could I be appertaining? could you be appertaining? could he be appertaining? could we be appertaining? could you be appertaining? could they be appertaining?
Perfect	V-ing perfect
could I have appertained? could you have appertained? could he have appertained? could we have appertained? could you have appertained? could they have appertained?	could I have been appertaining? could you have been appertaining? could he have been appertaining? could we have been appertaining? could you have been appertaining? could they have been appertaining?

Interro-negative form

Simple form	V-ing form
couldn't I appertain? couldn't you appertain? couldn't he appertain? couldn't we appertain? couldn't you appertain? couldn't they appertain?	couldn't I be appertaining? couldn't you be appertaining? couldn't he be appertaining? couldn't we be appertaining? couldn't you be appertaining? couldn't they be appertaining?
Perfect	V-ing perfect
couldn't I have appertained? couldn't you have appertained? couldn't he have appertained? couldn't we have appertained? couldn't you have appertained? couldn't they have appertained?	couldn't I have been appertaining? couldn't you have been appertaining? couldn't he have been appertaining? couldn't we have been appertaining? couldn't you have been appertaining? couldn't they have been appertaining?