English verb conjugation MUST STRAIGHTEN

Regular verb: straighten - straightened - straightened

Affirmation

Simple form

I must straighten
you must straighten
he must straighten
we must straighten
you must straighten
they must straighten

V-ing form

I must be straightening
you must be straightening
he must be straightening
we must be straightening
you must be straightening
they must be straightening

Perfect

I must have straightened
you must have straightened
he must have straightened
we must have straightened
you must have straightened
they must have straightened

V-ing perfect

I must have been straightening
you must have been straightening
he must have been straightening
we must have been straightening
you must have been straightening
they must have been straightening

Negation

Simple form

I must not straighten
you must not straighten
he must not straighten
we must not straighten
you must not straighten
they must not straighten

V-ing form

I must not be straightening
you must not be straightening
he must not be straightening
we must not be straightening
you must not be straightening
they must not be straightening

Perfect

I must not have straightened
you must not have straightened
he must not have straightened
we must not have straightened
you must not have straightened
they must not have straightened

V-ing perfect

I must not have been straightening
you must not have been straightening
he must not have been straightening
we must not have been straightening
you must not have been straightening
they must not have been straightening

Interrogative form

Simple form

must I straighten?
must you straighten?
must he straighten?
must we straighten?
must you straighten?
must they straighten?

V-ing form

must I be straightening?
must you be straightening?
must he be straightening?
must we be straightening?
must you be straightening?
must they be straightening?

Perfect

must I have straightened?
must you have straightened?
must he have straightened?
must we have straightened?
must you have straightened?
must they have straightened?

V-ing perfect

must I have been straightening?
must you have been straightening?
must he have been straightening?
must we have been straightening?
must you have been straightening?
must they have been straightening?

Interro-negative form

Simple form

must I not straighten?
must you not straighten?
must he not straighten?
must we not straighten?
must you not straighten?
must they not straighten?

V-ing form

must I not be straightening?
must you not be straightening?
must he not be straightening?
must we not be straightening?
must you not be straightening?
must they not be straightening?

Perfect

must I not have straightened?
must you not have straightened?
must he not have straightened?
must we not have straightened?
must you not have straightened?
must they not have straightened?

V-ing perfect

must I not have been straightening?
must you not have been straightening?
must he not have been straightening?
must we not have been straightening?
must you not have been straightening?
must they not have been straightening?

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