English verb conjugation CAN HEIGHTEN

Regular verb: heighten - heightened - heightened

Affirmation

Simple form

I can heighten
you can heighten
he can heighten
we can heighten
you can heighten
they can heighten

V-ing form

I can be heightening
you can be heightening
he can be heightening
we can be heightening
you can be heightening
they can be heightening

Perfect

I can have heightened
you can have heightened
he can have heightened
we can have heightened
you can have heightened
they can have heightened

V-ing perfect

I can have been heightening
you can have been heightening
he can have been heightening
we can have been heightening
you can have been heightening
they can have been heightening

Negation

Simple form

I can't heighten
you can't heighten
he can't heighten
we can't heighten
you can't heighten
they can't heighten

V-ing form

I can't be heightening
you can't be heightening
he can't be heightening
we can't be heightening
you can't be heightening
they can't be heightening

Perfect

I can't have heightened
you can't have heightened
he can't have heightened
we can't have heightened
you can't have heightened
they can't have heightened

V-ing perfect

I can't have been heightening
you can't have been heightening
he can't have been heightening
we can't have been heightening
you can't have been heightening
they can't have been heightening

Interrogative form

Simple form

can I heighten?
can you heighten?
can he heighten?
can we heighten?
can you heighten?
can they heighten?

V-ing form

can I be heightening?
can you be heightening?
can he be heightening?
can we be heightening?
can you be heightening?
can they be heightening?

Perfect

can I have heightened?
can you have heightened?
can he have heightened?
can we have heightened?
can you have heightened?
can they have heightened?

V-ing perfect

can I have been heightening?
can you have been heightening?
can he have been heightening?
can we have been heightening?
can you have been heightening?
can they have been heightening?

Interro-negative form

Simple form

can't I heighten?
can't you heighten?
can't he heighten?
can't we heighten?
can't you heighten?
can't they heighten?

V-ing form

can't I be heightening?
can't you be heightening?
can't he be heightening?
can't we be heightening?
can't you be heightening?
can't they be heightening?

Perfect

can't I have heightened?
can't you have heightened?
can't he have heightened?
can't we have heightened?
can't you have heightened?
can't they have heightened?

V-ing perfect

can't I have been heightening?
can't you have been heightening?
can't he have been heightening?
can't we have been heightening?
can't you have been heightening?
can't they have been heightening?

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