English verb conjugation
CAN HAVEN

Regular verb: haven - havened - havened

Affirmation

Simple form	V-ing form
I can haven you can haven he can haven we can haven you can haven they can haven	I can be havening you can be havening he can be havening we can be havening you can be havening they can be havening
Perfect	V-ing perfect
I can have havened you can have havened he can have havened we can have havened you can have havened they can have havened	I can have been havening you can have been havening he can have been havening we can have been havening you can have been havening they can have been havening

Negation

Simple form	V-ing form
I cannot haven you cannot haven he cannot haven we cannot haven you cannot haven they cannot haven	I cannot be havening you cannot be havening he cannot be havening we cannot be havening you cannot be havening they cannot be havening
Perfect	V-ing perfect
I cannot have havened you cannot have havened he cannot have havened we cannot have havened you cannot have havened they cannot have havened	I cannot have been havening you cannot have been havening he cannot have been havening we cannot have been havening you cannot have been havening they cannot have been havening

Interrogative form

Simple form	V-ing form
can I haven? can you haven? can he haven? can we haven? can you haven? can they haven?	can I be havening? can you be havening? can he be havening? can we be havening? can you be havening? can they be havening?
Perfect	V-ing perfect
can I have havened? can you have havened? can he have havened? can we have havened? can you have havened? can they have havened?	can I have been havening? can you have been havening? can he have been havening? can we have been havening? can you have been havening? can they have been havening?

Interro-negative form

Simple form	V-ing form
can I not haven? can you not haven? can he not haven? can we not haven? can you not haven? can they not haven?	can I not be havening? can you not be havening? can he not be havening? can we not be havening? can you not be havening? can they not be havening?
Perfect	V-ing perfect
can I not have havened? can you not have havened? can he not have havened? can we not have havened? can you not have havened? can they not have havened?	can I not have been havening? can you not have been havening? can he not have been havening? can we not have been havening? can you not have been havening? can they not have been havening?