English verb conjugation
MUST VEX

Regular verb: vex - vexed - vexed

Affirmation

Simple form	V-ing form
I must vex you must vex she must vex we must vex you must vex they must vex	I must be vexing you must be vexing she must be vexing we must be vexing you must be vexing they must be vexing
Perfect	V-ing perfect
I must have vexed you must have vexed she must have vexed we must have vexed you must have vexed they must have vexed	I must have been vexing you must have been vexing she must have been vexing we must have been vexing you must have been vexing they must have been vexing

Negation

Simple form	V-ing form
I must not vex you must not vex she must not vex we must not vex you must not vex they must not vex	I must not be vexing you must not be vexing she must not be vexing we must not be vexing you must not be vexing they must not be vexing
Perfect	V-ing perfect
I must not have vexed you must not have vexed she must not have vexed we must not have vexed you must not have vexed they must not have vexed	I must not have been vexing you must not have been vexing she must not have been vexing we must not have been vexing you must not have been vexing they must not have been vexing

Interrogative form

Simple form	V-ing form
must I vex? must you vex? must she vex? must we vex? must you vex? must they vex?	must I be vexing? must you be vexing? must she be vexing? must we be vexing? must you be vexing? must they be vexing?
Perfect	V-ing perfect
must I have vexed? must you have vexed? must she have vexed? must we have vexed? must you have vexed? must they have vexed?	must I have been vexing? must you have been vexing? must she have been vexing? must we have been vexing? must you have been vexing? must they have been vexing?

Interro-negative form

Simple form	V-ing form
must I not vex? must you not vex? must she not vex? must we not vex? must you not vex? must they not vex?	must I not be vexing? must you not be vexing? must she not be vexing? must we not be vexing? must you not be vexing? must they not be vexing?
Perfect	V-ing perfect
must I not have vexed? must you not have vexed? must she not have vexed? must we not have vexed? must you not have vexed? must they not have vexed?	must I not have been vexing? must you not have been vexing? must she not have been vexing? must we not have been vexing? must you not have been vexing? must they not have been vexing?