can propound
Regular verb: propound - propounded- propounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can propound
you can propound
he can propound
we can propound
you can propound
they can propound 	I can be propounding
you can be propounding
he can be propounding
we can be propounding
you can be propounding
they can be propounding	I can have propounded
you can have propounded
he can have propounded
we can have propounded
you can have propounded
they can have propounded	I can have been propounding
you can have been propounding
he can have been propounding
we can have been propounding
you can have been propounding
they can have been propounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot propound
you cannot propound
he cannot propound
we cannot propound
you cannot propound
they cannot propound 	I cannot be propounding
you cannot be propounding
he cannot be propounding
we cannot be propounding
you cannot be propounding
they cannot be propounding	I cannot have propounded
you cannot have propounded
he cannot have propounded
we cannot have propounded
you cannot have propounded
they cannot have propounded	I cannot have been propounding
you cannot have been propounding
he cannot have been propounding
we cannot have been propounding
you cannot have been propounding
they cannot have been propounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I propound?
can you propound?
can he propound?
can we propound?
can you propound?
can they propound? 	can I be propounding?
can you be propounding?
can he be propounding?
can we be propounding?
can you be propounding?
can they be propounding? 	can I have propounded?
can you have propounded?
can he have propounded?
can we have propounded?
can you have propounded?
can they have propounded? 	can I have been propounding?
can you have been propounding?
can he have been propounding?
can we have been propounding?
can you have been propounding?
can they have been propounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not propound?
can you not propound?
can he not propound?
can we not propound?
can you not propound?
can they not propound? 	can I not be propounding?
can you not be propounding?
can he not be propounding?
can we not be propounding?
can you not be propounding?
can they not be propounding? 	can I not have propounded?
can you not have propounded?
can he not have propounded?
can we not have propounded?
can you not have propounded?
can they not have propounded? 	can I not have been propounding?
can you not have been propounding?
can he not have been propounding?
can we not have been propounding?
can you not have been propounding?
can they not have been propounding?