English verb conjugation MUST SKIRL

Regular verb: skirl - skirled - skirled

Affirmation

Simple form

I must skirl
you must skirl
she must skirl
we must skirl
you must skirl
they must skirl

V-ing form

I must be skirling
you must be skirling
she must be skirling
we must be skirling
you must be skirling
they must be skirling

Perfect

I must have skirled
you must have skirled
she must have skirled
we must have skirled
you must have skirled
they must have skirled

V-ing perfect

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

Negation

Simple form

I mustn't skirl
you mustn't skirl
she mustn't skirl
we mustn't skirl
you mustn't skirl
they mustn't skirl

V-ing form

I mustn't be skirling
you mustn't be skirling
she mustn't be skirling
we mustn't be skirling
you mustn't be skirling
they mustn't be skirling

Perfect

I mustn't have skirled
you mustn't have skirled
she mustn't have skirled
we mustn't have skirled
you mustn't have skirled
they mustn't have skirled

V-ing perfect

I mustn't have been skirling
you mustn't have been skirling
she mustn't have been skirling
we mustn't have been skirling
you mustn't have been skirling
they mustn't have been skirling

Interrogative form

Simple form

must I skirl?
must you skirl?
must she skirl?
must we skirl?
must you skirl?
must they skirl?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I skirl?
mustn't you skirl?
mustn't she skirl?
mustn't we skirl?
mustn't you skirl?
mustn't they skirl?

V-ing form

mustn't I be skirling?
mustn't you be skirling?
mustn't she be skirling?
mustn't we be skirling?
mustn't you be skirling?
mustn't they be skirling?

Perfect

mustn't I have skirled?
mustn't you have skirled?
mustn't she have skirled?
mustn't we have skirled?
mustn't you have skirled?
mustn't they have skirled?

V-ing perfect

mustn't I have been skirling?
mustn't you have been skirling?
mustn't she have been skirling?
mustn't we have been skirling?
mustn't you have been skirling?
mustn't they have been skirling?

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