English verb conjugation
OUGHT TO CLUSTER

Regular verb: cluster - clustered - clustered

Affirmation

Simple form	V-ing form
I ought to cluster you ought to cluster he ought to cluster we ought to cluster you ought to cluster they ought to cluster	I ought to be clustering you ought to be clustering he ought to be clustering we ought to be clustering you ought to be clustering they ought to be clustering
Perfect	V-ing perfect
I ought to have clustered you ought to have clustered he ought to have clustered we ought to have clustered you ought to have clustered they ought to have clustered	I ought to have been clustering you ought to have been clustering he ought to have been clustering we ought to have been clustering you ought to have been clustering they ought to have been clustering

Negation

Simple form	V-ing form
I ought not to cluster you ought not to cluster he ought not to cluster we ought not to cluster you ought not to cluster they ought not to cluster	I ought not to clustering you ought not to clustering he ought not to clustering we ought not to clustering you ought not to clustering they ought not to clustering
Perfect	V-ing perfect
I ought not to have clustered you ought not to have clustered he ought not to have clustered we ought not to have clustered you ought not to have clustered they ought not to have clustered	I ought not to have been clustering you ought not to have been clustering he ought not to have been clustering we ought not to have been clustering you ought not to have been clustering they ought not to have been clustering

Interrogative form

Simple form	V-ing form
ought to I cluster? ought to you cluster? ought to he cluster? ought to we cluster? ought to you cluster? ought to they cluster?	ought to I be clustering? ought to you be clustering? ought to he be clustering? ought to we be clustering? ought to you be clustering? ought to they be clustering?
Perfect	V-ing perfect
ought to I have clustered? ought to you have clustered? ought to he have clustered? ought to we have clustered? ought to you have clustered? ought to they have clustered?	ought to I have been clustering? ought to you have been clustering? ought to he have been clustering? ought to we have been clustering? ought to you have been clustering? ought to they have been clustering?

Interro-negative form

Simple form	V-ing form
ought I not to cluster? ought you not to cluster? ought he not to cluster? ought we not to cluster? ought you not to cluster? ought they not to cluster?	ought I not to be clustering? ought you not to be clustering? ought he not to be clustering? ought we not to be clustering? ought you not to be clustering? ought they not to be clustering?
Perfect	V-ing perfect
ought I not to have clustered? ought you not to have clustered? ought he not to have clustered? ought we not to have clustered? ought you not to have clustered? ought they not to have clustered?	ought I not to have been clustering? ought you not to have been clustering? ought he not to have been clustering? ought we not to have been clustering? ought you not to have been clustering? ought they not to have been clustering?