English verb conjugation MUST PERK

Regular verb: perk - perked - perked

Affirmation

Simple form

I must perk
you must perk
he must perk
we must perk
you must perk
they must perk

V-ing form

I must be perking
you must be perking
he must be perking
we must be perking
you must be perking
they must be perking

Perfect

I must have perked
you must have perked
he must have perked
we must have perked
you must have perked
they must have perked

V-ing perfect

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

Negation

Simple form

I must not perk
you must not perk
he must not perk
we must not perk
you must not perk
they must not perk

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I perk?
must you perk?
must he perk?
must we perk?
must you perk?
must they perk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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