English verb conjugation MUST CLUSTER

Regular verb: cluster - clustered - clustered

Affirmation

Simple form

I must cluster
you must cluster
she must cluster
we must cluster
you must cluster
they must cluster

V-ing form

I must be clustering
you must be clustering
she must be clustering
we must be clustering
you must be clustering
they must be clustering

Perfect

I must have clustered
you must have clustered
she must have clustered
we must have clustered
you must have clustered
they must have clustered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I cluster?
must you cluster?
must she cluster?
must we cluster?
must you cluster?
must they cluster?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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