English verb conjugation MUST SKULK

Regular verb: skulk - skulked - skulked

Affirmation

Simple form

I must skulk
you must skulk
he must skulk
we must skulk
you must skulk
they must skulk

V-ing form

I must be skulking
you must be skulking
he must be skulking
we must be skulking
you must be skulking
they must be skulking

Perfect

I must have skulked
you must have skulked
he must have skulked
we must have skulked
you must have skulked
they must have skulked

V-ing perfect

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

Negation

Simple form

I must not skulk
you must not skulk
he must not skulk
we must not skulk
you must not skulk
they must not skulk

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I skulk?
must you skulk?
must he skulk?
must we skulk?
must you skulk?
must they skulk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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