English verb conjugation
CAN PEEN

Regular verb: peen - peened - peened

Affirmation

Simple form	V-ing form
I can peen you can peen he can peen we can peen you can peen they can peen	I can be peening you can be peening he can be peening we can be peening you can be peening they can be peening
Perfect	V-ing perfect
I can have peened you can have peened he can have peened we can have peened you can have peened they can have peened	I can have been peening you can have been peening he can have been peening we can have been peening you can have been peening they can have been peening

Negation

Simple form	V-ing form
I can't peen you can't peen he can't peen we can't peen you can't peen they can't peen	I can't be peening you can't be peening he can't be peening we can't be peening you can't be peening they can't be peening
Perfect	V-ing perfect
I can't have peened you can't have peened he can't have peened we can't have peened you can't have peened they can't have peened	I can't have been peening you can't have been peening he can't have been peening we can't have been peening you can't have been peening they can't have been peening

Interrogative form

Simple form	V-ing form
can I peen? can you peen? can he peen? can we peen? can you peen? can they peen?	can I be peening? can you be peening? can he be peening? can we be peening? can you be peening? can they be peening?
Perfect	V-ing perfect
can I have peened? can you have peened? can he have peened? can we have peened? can you have peened? can they have peened?	can I have been peening? can you have been peening? can he have been peening? can we have been peening? can you have been peening? can they have been peening?

Interro-negative form

Simple form	V-ing form
can't I peen? can't you peen? can't he peen? can't we peen? can't you peen? can't they peen?	can't I be peening? can't you be peening? can't he be peening? can't we be peening? can't you be peening? can't they be peening?
Perfect	V-ing perfect
can't I have peened? can't you have peened? can't he have peened? can't we have peened? can't you have peened? can't they have peened?	can't I have been peening? can't you have been peening? can't he have been peening? can't we have been peening? can't you have been peening? can't they have been peening?