English verb conjugation
COULD POSSESS

Regular verb: possess - possessed - possessed

Affirmation

Simple form	V-ing form
I could possess you could possess she could possess we could possess you could possess they could possess	I could be possessing you could be possessing she could be possessing we could be possessing you could be possessing they could be possessing
Perfect	V-ing perfect
I could have possessed you could have possessed she could have possessed we could have possessed you could have possessed they could have possessed	I could have been possessing you could have been possessing she could have been possessing we could have been possessing you could have been possessing they could have been possessing

Negation

Simple form	V-ing form
I couldn't possess you couldn't possess she couldn't possess we couldn't possess you couldn't possess they couldn't possess	I couldn't be possessing you couldn't be possessing she couldn't be possessing we couldn't be possessing you couldn't be possessing they couldn't be possessing
Perfect	V-ing perfect
I couldn't have possessed you couldn't have possessed she couldn't have possessed we couldn't have possessed you couldn't have possessed they couldn't have possessed	I couldn't have been possessing you couldn't have been possessing she couldn't have been possessing we couldn't have been possessing you couldn't have been possessing they couldn't have been possessing

Interrogative form

Simple form	V-ing form
could I possess? could you possess? could she possess? could we possess? could you possess? could they possess?	could I be possessing? could you be possessing? could she be possessing? could we be possessing? could you be possessing? could they be possessing?
Perfect	V-ing perfect
could I have possessed? could you have possessed? could she have possessed? could we have possessed? could you have possessed? could they have possessed?	could I have been possessing? could you have been possessing? could she have been possessing? could we have been possessing? could you have been possessing? could they have been possessing?

Interro-negative form

Simple form	V-ing form
couldn't I possess? couldn't you possess? couldn't she possess? couldn't we possess? couldn't you possess? couldn't they possess?	couldn't I be possessing? couldn't you be possessing? couldn't she be possessing? couldn't we be possessing? couldn't you be possessing? couldn't they be possessing?
Perfect	V-ing perfect
couldn't I have possessed? couldn't you have possessed? couldn't she have possessed? couldn't we have possessed? couldn't you have possessed? couldn't they have possessed?	couldn't I have been possessing? couldn't you have been possessing? couldn't she have been possessing? couldn't we have been possessing? couldn't you have been possessing? couldn't they have been possessing?