English verb conjugation
CAN WAG

Regular verb: wag - wagged - wagged

Affirmation

Simple form	V-ing form
I can wag you can wag he can wag we can wag you can wag they can wag	I can be wagging you can be wagging he can be wagging we can be wagging you can be wagging they can be wagging
Perfect	V-ing perfect
I can have wagged you can have wagged he can have wagged we can have wagged you can have wagged they can have wagged	I can have been wagging you can have been wagging he can have been wagging we can have been wagging you can have been wagging they can have been wagging

Negation

Simple form	V-ing form
I can't wag you can't wag he can't wag we can't wag you can't wag they can't wag	I can't be wagging you can't be wagging he can't be wagging we can't be wagging you can't be wagging they can't be wagging
Perfect	V-ing perfect
I can't have wagged you can't have wagged he can't have wagged we can't have wagged you can't have wagged they can't have wagged	I can't have been wagging you can't have been wagging he can't have been wagging we can't have been wagging you can't have been wagging they can't have been wagging

Interrogative form

Simple form	V-ing form
can I wag? can you wag? can he wag? can we wag? can you wag? can they wag?	can I be wagging? can you be wagging? can he be wagging? can we be wagging? can you be wagging? can they be wagging?
Perfect	V-ing perfect
can I have wagged? can you have wagged? can he have wagged? can we have wagged? can you have wagged? can they have wagged?	can I have been wagging? can you have been wagging? can he have been wagging? can we have been wagging? can you have been wagging? can they have been wagging?

Interro-negative form

Simple form	V-ing form
can't I wag? can't you wag? can't he wag? can't we wag? can't you wag? can't they wag?	can't I be wagging? can't you be wagging? can't he be wagging? can't we be wagging? can't you be wagging? can't they be wagging?
Perfect	V-ing perfect
can't I have wagged? can't you have wagged? can't he have wagged? can't we have wagged? can't you have wagged? can't they have wagged?	can't I have been wagging? can't you have been wagging? can't he have been wagging? can't we have been wagging? can't you have been wagging? can't they have been wagging?