English verb conjugation MUST SURFACE

Regular verb: surface - surfaced - surfaced

Affirmation

Simple form

I must surface
you must surface
he must surface
we must surface
you must surface
they must surface

V-ing form

I must be surfacing
you must be surfacing
he must be surfacing
we must be surfacing
you must be surfacing
they must be surfacing

Perfect

I must have surfaced
you must have surfaced
he must have surfaced
we must have surfaced
you must have surfaced
they must have surfaced

V-ing perfect

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

Negation

Simple form

I must not surface
you must not surface
he must not surface
we must not surface
you must not surface
they must not surface

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I surface?
must you surface?
must he surface?
must we surface?
must you surface?
must they surface?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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