English verb conjugation
COULD PROPOUND

Regular verb: propound - propounded - propounded

Affirmation

Simple form	V-ing form
I could propound you could propound she could propound we could propound you could propound they could propound	I could be propounding you could be propounding she could be propounding we could be propounding you could be propounding they could be propounding
Perfect	V-ing perfect
I could have propounded you could have propounded she could have propounded we could have propounded you could have propounded they could have propounded	I could have been propounding you could have been propounding she could have been propounding we could have been propounding you could have been propounding they could have been propounding

Negation

Simple form	V-ing form
I could not propound you could not propound she could not propound we could not propound you could not propound they could not propound	I could not be propounding you could not be propounding she could not be propounding we could not be propounding you could not be propounding they could not be propounding
Perfect	V-ing perfect
I could not have propounded you could not have propounded she could not have propounded we could not have propounded you could not have propounded they could not have propounded	I could not have been propounding you could not have been propounding she could not have been propounding we could not have been propounding you could not have been propounding they could not have been propounding

Interrogative form

Simple form	V-ing form
could I propound? could you propound? could she propound? could we propound? could you propound? could they propound?	could I be propounding? could you be propounding? could she be propounding? could we be propounding? could you be propounding? could they be propounding?
Perfect	V-ing perfect
could I have propounded? could you have propounded? could she have propounded? could we have propounded? could you have propounded? could they have propounded?	could I have been propounding? could you have been propounding? could she have been propounding? could we have been propounding? could you have been propounding? could they have been propounding?

Interro-negative form

Simple form	V-ing form
could I not propound? could you not propound? could she not propound? could we not propound? could you not propound? could they not propound?	could I not be propounding? could you not be propounding? could she not be propounding? could we not be propounding? could you not be propounding? could they not be propounding?
Perfect	V-ing perfect
could I not have propounded? could you not have propounded? could she not have propounded? could we not have propounded? could you not have propounded? could they not have propounded?	could I not have been propounding? could you not have been propounding? could she not have been propounding? could we not have been propounding? could you not have been propounding? could they not have been propounding?