English verb conjugation
CAN OK

Regular verb: ok - oked - oked

Affirmation

Simple form	V-ing form
I can ok you can ok he can ok we can ok you can ok they can ok	I can be oking you can be oking he can be oking we can be oking you can be oking they can be oking
Perfect	V-ing perfect
I can have oked you can have oked he can have oked we can have oked you can have oked they can have oked	I can have been oking you can have been oking he can have been oking we can have been oking you can have been oking they can have been oking

Negation

Simple form	V-ing form
I cannot ok you cannot ok he cannot ok we cannot ok you cannot ok they cannot ok	I cannot be oking you cannot be oking he cannot be oking we cannot be oking you cannot be oking they cannot be oking
Perfect	V-ing perfect
I cannot have oked you cannot have oked he cannot have oked we cannot have oked you cannot have oked they cannot have oked	I cannot have been oking you cannot have been oking he cannot have been oking we cannot have been oking you cannot have been oking they cannot have been oking

Interrogative form

Simple form	V-ing form
can I ok? can you ok? can he ok? can we ok? can you ok? can they ok?	can I be oking? can you be oking? can he be oking? can we be oking? can you be oking? can they be oking?
Perfect	V-ing perfect
can I have oked? can you have oked? can he have oked? can we have oked? can you have oked? can they have oked?	can I have been oking? can you have been oking? can he have been oking? can we have been oking? can you have been oking? can they have been oking?

Interro-negative form

Simple form	V-ing form
can I not ok? can you not ok? can he not ok? can we not ok? can you not ok? can they not ok?	can I not be oking? can you not be oking? can he not be oking? can we not be oking? can you not be oking? can they not be oking?
Perfect	V-ing perfect
can I not have oked? can you not have oked? can he not have oked? can we not have oked? can you not have oked? can they not have oked?	can I not have been oking? can you not have been oking? can he not have been oking? can we not have been oking? can you not have been oking? can they not have been oking?