English verb conjugation
MAY CLUSTER

Regular verb: cluster - clustered - clustered

Affirmation

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

Negation

Simple form	V-ing form
I mayn't cluster you mayn't cluster he mayn't cluster we mayn't cluster you mayn't cluster they mayn't cluster	I mayn't be clustering you mayn't be clustering he mayn't be clustering we mayn't be clustering you mayn't be clustering they mayn't be clustering
Perfect	V-ing perfect
I mayn't have clustered you mayn't have clustered he mayn't have clustered we mayn't have clustered you mayn't have clustered they mayn't have clustered	I mayn't have been clustering you mayn't have been clustering he mayn't have been clustering we mayn't have been clustering you mayn't have been clustering they mayn't have been clustering

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mayn't I cluster? mayn't you cluster? mayn't he cluster? mayn't we cluster? mayn't you cluster? mayn't they cluster?	mayn't I be clustering? mayn't you be clustering? mayn't he be clustering? mayn't we be clustering? mayn't you be clustering? mayn't they be clustering?
Perfect	V-ing perfect
mayn't I have clustered? mayn't you have clustered? mayn't he have clustered? mayn't we have clustered? mayn't you have clustered? mayn't they have clustered?	mayn't I have been clustering? mayn't you have been clustering? mayn't he have been clustering? mayn't we have been clustering? mayn't you have been clustering? mayn't they have been clustering?