English verb conjugation MUST LAG

Regular verb: lag - lagged - lagged

Affirmation

Simple form

I must lag
you must lag
he must lag
we must lag
you must lag
they must lag

V-ing form

I must be lagging
you must be lagging
he must be lagging
we must be lagging
you must be lagging
they must be lagging

Perfect

I must have lagged
you must have lagged
he must have lagged
we must have lagged
you must have lagged
they must have lagged

V-ing perfect

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

Negation

Simple form

I mustn't lag
you mustn't lag
he mustn't lag
we mustn't lag
you mustn't lag
they mustn't lag

V-ing form

I mustn't be lagging
you mustn't be lagging
he mustn't be lagging
we mustn't be lagging
you mustn't be lagging
they mustn't be lagging

Perfect

I mustn't have lagged
you mustn't have lagged
he mustn't have lagged
we mustn't have lagged
you mustn't have lagged
they mustn't have lagged

V-ing perfect

I mustn't have been lagging
you mustn't have been lagging
he mustn't have been lagging
we mustn't have been lagging
you mustn't have been lagging
they mustn't have been lagging

Interrogative form

Simple form

must I lag?
must you lag?
must he lag?
must we lag?
must you lag?
must they lag?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I lag?
mustn't you lag?
mustn't he lag?
mustn't we lag?
mustn't you lag?
mustn't they lag?

V-ing form

mustn't I be lagging?
mustn't you be lagging?
mustn't he be lagging?
mustn't we be lagging?
mustn't you be lagging?
mustn't they be lagging?

Perfect

mustn't I have lagged?
mustn't you have lagged?
mustn't he have lagged?
mustn't we have lagged?
mustn't you have lagged?
mustn't they have lagged?

V-ing perfect

mustn't I have been lagging?
mustn't you have been lagging?
mustn't he have been lagging?
mustn't we have been lagging?
mustn't you have been lagging?
mustn't they have been lagging?

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