could vex
Regular verb: vex - vexed- vexed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't vex
you couldn't vex
she couldn't vex
we couldn't vex
you couldn't vex
they couldn't vex 	I couldn't be vexing
you couldn't be vexing
she couldn't be vexing
we couldn't be vexing
you couldn't be vexing
they couldn't be vexing	I couldn't have vexed
you couldn't have vexed
she couldn't have vexed
we couldn't have vexed
you couldn't have vexed
they couldn't have vexed	I couldn't have been vexing
you couldn't have been vexing
she couldn't have been vexing
we couldn't have been vexing
you couldn't have been vexing
they couldn't have been vexing	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I vex?
couldn't you vex?
couldn't she vex?
couldn't we vex?
couldn't you vex?
couldn't they vex? 	couldn't I be vexing?
couldn't you be vexing?
couldn't she be vexing?
couldn't we be vexing?
couldn't you be vexing?
couldn't they be vexing? 	couldn't I have vexed?
couldn't you have vexed?
couldn't she have vexed?
couldn't we have vexed?
couldn't you have vexed?
couldn't they have vexed? 	couldn't I have been vexing?
couldn't you have been vexing?
couldn't she have been vexing?
couldn't we have been vexing?
couldn't you have been vexing?
couldn't they have been vexing?