English verb conjugation
MUST PROPOUND

Regular verb: propound - propounded - propounded

Affirmation

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

Negation

Simple form	V-ing form
I mustn't propound you mustn't propound he mustn't propound we mustn't propound you mustn't propound they mustn't propound	I mustn't be propounding you mustn't be propounding he mustn't be propounding we mustn't be propounding you mustn't be propounding they mustn't be propounding
Perfect	V-ing perfect
I mustn't have propounded you mustn't have propounded he mustn't have propounded we mustn't have propounded you mustn't have propounded they mustn't have propounded	I mustn't have been propounding you mustn't have been propounding he mustn't have been propounding we mustn't have been propounding you mustn't have been propounding they mustn't have been propounding

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I propound? mustn't you propound? mustn't he propound? mustn't we propound? mustn't you propound? mustn't they propound?	mustn't I be propounding? mustn't you be propounding? mustn't he be propounding? mustn't we be propounding? mustn't you be propounding? mustn't they be propounding?
Perfect	V-ing perfect
mustn't I have propounded? mustn't you have propounded? mustn't he have propounded? mustn't we have propounded? mustn't you have propounded? mustn't they have propounded?	mustn't I have been propounding? mustn't you have been propounding? mustn't he have been propounding? mustn't we have been propounding? mustn't you have been propounding? mustn't they have been propounding?