English verb conjugation MUST SIGN

Regular verb: sign - signed - signed

Affirmation

Simple form

I must sign
you must sign
he must sign
we must sign
you must sign
they must sign

V-ing form

I must be signing
you must be signing
he must be signing
we must be signing
you must be signing
they must be signing

Perfect

I must have signed
you must have signed
he must have signed
we must have signed
you must have signed
they must have signed

V-ing perfect

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

Negation

Simple form

I must not sign
you must not sign
he must not sign
we must not sign
you must not sign
they must not sign

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sign?
must you sign?
must he sign?
must we sign?
must you sign?
must they sign?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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