English verb conjugation
MUST EXPOUND

Regular verb: expound - expounded - expounded

Affirmation

Simple form	V-ing form
I must expound you must expound she must expound we must expound you must expound they must expound	I must be expounding you must be expounding she must be expounding we must be expounding you must be expounding they must be expounding
Perfect	V-ing perfect
I must have expounded you must have expounded she must have expounded we must have expounded you must have expounded they must have expounded	I must have been expounding you must have been expounding she must have been expounding we must have been expounding you must have been expounding they must have been expounding

Negation

Simple form	V-ing form
I mustn't expound you mustn't expound she mustn't expound we mustn't expound you mustn't expound they mustn't expound	I mustn't be expounding you mustn't be expounding she mustn't be expounding we mustn't be expounding you mustn't be expounding they mustn't be expounding
Perfect	V-ing perfect
I mustn't have expounded you mustn't have expounded she mustn't have expounded we mustn't have expounded you mustn't have expounded they mustn't have expounded	I mustn't have been expounding you mustn't have been expounding she mustn't have been expounding we mustn't have been expounding you mustn't have been expounding they mustn't have been expounding

Interrogative form

Simple form	V-ing form
must I expound? must you expound? must she expound? must we expound? must you expound? must they expound?	must I be expounding? must you be expounding? must she be expounding? must we be expounding? must you be expounding? must they be expounding?
Perfect	V-ing perfect
must I have expounded? must you have expounded? must she have expounded? must we have expounded? must you have expounded? must they have expounded?	must I have been expounding? must you have been expounding? must she have been expounding? must we have been expounding? must you have been expounding? must they have been expounding?

Interro-negative form

Simple form	V-ing form
mustn't I expound? mustn't you expound? mustn't she expound? mustn't we expound? mustn't you expound? mustn't they expound?	mustn't I be expounding? mustn't you be expounding? mustn't she be expounding? mustn't we be expounding? mustn't you be expounding? mustn't they be expounding?
Perfect	V-ing perfect
mustn't I have expounded? mustn't you have expounded? mustn't she have expounded? mustn't we have expounded? mustn't you have expounded? mustn't they have expounded?	mustn't I have been expounding? mustn't you have been expounding? mustn't she have been expounding? mustn't we have been expounding? mustn't you have been expounding? mustn't they have been expounding?