English verb conjugation COULD HAVEN

Regular verb: haven - havened - havened

Affirmation

Simple form

I could haven
you could haven
he could haven
we could haven
you could haven
they could haven

V-ing form

I could be havening
you could be havening
he could be havening
we could be havening
you could be havening
they could be havening

Perfect

I could have havened
you could have havened
he could have havened
we could have havened
you could have havened
they could have havened

V-ing perfect

I could have been havening
you could have been havening
he could have been havening
we could have been havening
you could have been havening
they could have been havening

Negation

Simple form

I couldn't haven
you couldn't haven
he couldn't haven
we couldn't haven
you couldn't haven
they couldn't haven

V-ing form

I couldn't be havening
you couldn't be havening
he couldn't be havening
we couldn't be havening
you couldn't be havening
they couldn't be havening

Perfect

I couldn't have havened
you couldn't have havened
he couldn't have havened
we couldn't have havened
you couldn't have havened
they couldn't have havened

V-ing perfect

I couldn't have been havening
you couldn't have been havening
he couldn't have been havening
we couldn't have been havening
you couldn't have been havening
they couldn't have been havening

Interrogative form

Simple form

could I haven?
could you haven?
could he haven?
could we haven?
could you haven?
could they haven?

V-ing form

could I be havening?
could you be havening?
could he be havening?
could we be havening?
could you be havening?
could they be havening?

Perfect

could I have havened?
could you have havened?
could he have havened?
could we have havened?
could you have havened?
could they have havened?

V-ing perfect

could I have been havening?
could you have been havening?
could he have been havening?
could we have been havening?
could you have been havening?
could they have been havening?

Interro-negative form

Simple form

couldn't I haven?
couldn't you haven?
couldn't he haven?
couldn't we haven?
couldn't you haven?
couldn't they haven?

V-ing form

couldn't I be havening?
couldn't you be havening?
couldn't he be havening?
couldn't we be havening?
couldn't you be havening?
couldn't they be havening?

Perfect

couldn't I have havened?
couldn't you have havened?
couldn't he have havened?
couldn't we have havened?
couldn't you have havened?
couldn't they have havened?

V-ing perfect

couldn't I have been havening?
couldn't you have been havening?
couldn't he have been havening?
couldn't we have been havening?
couldn't you have been havening?
couldn't they have been havening?

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