English verb conjugation
CAN VEX

Regular verb: vex - vexed - vexed

Affirmation

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

Negation

Simple form	V-ing form
I cannot vex you cannot vex he cannot vex we cannot vex you cannot vex they cannot vex	I cannot be vexing you cannot be vexing he cannot be vexing we cannot be vexing you cannot be vexing they cannot be vexing
Perfect	V-ing perfect
I cannot have vexed you cannot have vexed he cannot have vexed we cannot have vexed you cannot have vexed they cannot have vexed	I cannot have been vexing you cannot have been vexing he cannot have been vexing we cannot have been vexing you cannot have been vexing they cannot have been vexing

Interrogative form

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

Interro-negative form

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