English verb conjugation MUST PI

Regular verb: pi - pied - pied

Affirmation

Simple form

I must pi
you must pi
she must pi
we must pi
you must pi
they must pi

V-ing form

I must be piing
you must be piing
she must be piing
we must be piing
you must be piing
they must be piing

Perfect

I must have pied
you must have pied
she must have pied
we must have pied
you must have pied
they must have pied

V-ing perfect

I must have been piing
you must have been piing
she must have been piing
we must have been piing
you must have been piing
they must have been piing

Negation

Simple form

I must not pi
you must not pi
she must not pi
we must not pi
you must not pi
they must not pi

V-ing form

I must not be piing
you must not be piing
she must not be piing
we must not be piing
you must not be piing
they must not be piing

Perfect

I must not have pied
you must not have pied
she must not have pied
we must not have pied
you must not have pied
they must not have pied

V-ing perfect

I must not have been piing
you must not have been piing
she must not have been piing
we must not have been piing
you must not have been piing
they must not have been piing

Interrogative form

Simple form

must I pi?
must you pi?
must she pi?
must we pi?
must you pi?
must they pi?

V-ing form

must I be piing?
must you be piing?
must she be piing?
must we be piing?
must you be piing?
must they be piing?

Perfect

must I have pied?
must you have pied?
must she have pied?
must we have pied?
must you have pied?
must they have pied?

V-ing perfect

must I have been piing?
must you have been piing?
must she have been piing?
must we have been piing?
must you have been piing?
must they have been piing?

Interro-negative form

Simple form

must I not pi?
must you not pi?
must she not pi?
must we not pi?
must you not pi?
must they not pi?

V-ing form

must I not be piing?
must you not be piing?
must she not be piing?
must we not be piing?
must you not be piing?
must they not be piing?

Perfect

must I not have pied?
must you not have pied?
must she not have pied?
must we not have pied?
must you not have pied?
must they not have pied?

V-ing perfect

must I not have been piing?
must you not have been piing?
must she not have been piing?
must we not have been piing?
must you not have been piing?
must they not have been piing?

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