English verb conjugation MUST CLUSTER

Regular verb: cluster - clustered - clustered

Affirmation

Simple form

I must cluster
you must cluster
he must cluster
we must cluster
you must cluster
they must cluster

V-ing form

I must be clustering
you must be clustering
he must be clustering
we must be clustering
you must be clustering
they must be clustering

Perfect

I must have clustered
you must have clustered
he 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
he must have been clustering
we must have been clustering
you must have been clustering
they must have been clustering

Negation

Simple form

I must not cluster
you must not cluster
he must not cluster
we must not cluster
you must not cluster
they must not cluster

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I cluster?
must you cluster?
must he cluster?
must we cluster?
must you cluster?
must they cluster?

V-ing form

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

Perfect

must I have clustered?
must you have clustered?
must he 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 he have been clustering?
must we have been clustering?
must you have been clustering?
must they have been clustering?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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