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 couldn't propound you couldn't propound she couldn't propound we couldn't propound you couldn't propound they couldn't propound	I couldn't be propounding you couldn't be propounding she couldn't be propounding we couldn't be propounding you couldn't be propounding they couldn't be propounding
Perfect	V-ing perfect
I couldn't have propounded you couldn't have propounded she couldn't have propounded we couldn't have propounded you couldn't have propounded they couldn't have propounded	I couldn't have been propounding you couldn't have been propounding she couldn't have been propounding we couldn't have been propounding you couldn't have been propounding they couldn't 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
couldn't I propound? couldn't you propound? couldn't she propound? couldn't we propound? couldn't you propound? couldn't they propound?	couldn't I be propounding? couldn't you be propounding? couldn't she be propounding? couldn't we be propounding? couldn't you be propounding? couldn't they be propounding?
Perfect	V-ing perfect
couldn't I have propounded? couldn't you have propounded? couldn't she have propounded? couldn't we have propounded? couldn't you have propounded? couldn't they have propounded?	couldn't I have been propounding? couldn't you have been propounding? couldn't she have been propounding? couldn't we have been propounding? couldn't you have been propounding? couldn't they have been propounding?