English verb conjugation
MUST EXERT

Regular verb: exert - exerted - exerted

Affirmation

Simple form	V-ing form
I must exert you must exert she must exert we must exert you must exert they must exert	I must be exerting you must be exerting she must be exerting we must be exerting you must be exerting they must be exerting
Perfect	V-ing perfect
I must have exerted you must have exerted she must have exerted we must have exerted you must have exerted they must have exerted	I must have been exerting you must have been exerting she must have been exerting we must have been exerting you must have been exerting they must have been exerting

Negation

Simple form	V-ing form
I must not exert you must not exert she must not exert we must not exert you must not exert they must not exert	I must not be exerting you must not be exerting she must not be exerting we must not be exerting you must not be exerting they must not be exerting
Perfect	V-ing perfect
I must not have exerted you must not have exerted she must not have exerted we must not have exerted you must not have exerted they must not have exerted	I must not have been exerting you must not have been exerting she must not have been exerting we must not have been exerting you must not have been exerting they must not have been exerting

Interrogative form

Simple form	V-ing form
must I exert? must you exert? must she exert? must we exert? must you exert? must they exert?	must I be exerting? must you be exerting? must she be exerting? must we be exerting? must you be exerting? must they be exerting?
Perfect	V-ing perfect
must I have exerted? must you have exerted? must she have exerted? must we have exerted? must you have exerted? must they have exerted?	must I have been exerting? must you have been exerting? must she have been exerting? must we have been exerting? must you have been exerting? must they have been exerting?

Interro-negative form

Simple form	V-ing form
must I not exert? must you not exert? must she not exert? must we not exert? must you not exert? must they not exert?	must I not be exerting? must you not be exerting? must she not be exerting? must we not be exerting? must you not be exerting? must they not be exerting?
Perfect	V-ing perfect
must I not have exerted? must you not have exerted? must she not have exerted? must we not have exerted? must you not have exerted? must they not have exerted?	must I not have been exerting? must you not have been exerting? must she not have been exerting? must we not have been exerting? must you not have been exerting? must they not have been exerting?