could propound
Regular verb: propound - propounded- propounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?