English verb conjugation
MAY RIB

Regular verb: rib - ribed - ribed

Affirmation

Simple form	V-ing form
I may rib you may rib he may rib we may rib you may rib they may rib	I may be ribing you may be ribing he may be ribing we may be ribing you may be ribing they may be ribing
Perfect	V-ing perfect
I may have ribed you may have ribed he may have ribed we may have ribed you may have ribed they may have ribed	I may have been ribing you may have been ribing he may have been ribing we may have been ribing you may have been ribing they may have been ribing

Negation

Simple form	V-ing form
I mayn't rib you mayn't rib he mayn't rib we mayn't rib you mayn't rib they mayn't rib	I mayn't be ribing you mayn't be ribing he mayn't be ribing we mayn't be ribing you mayn't be ribing they mayn't be ribing
Perfect	V-ing perfect
I mayn't have ribed you mayn't have ribed he mayn't have ribed we mayn't have ribed you mayn't have ribed they mayn't have ribed	I mayn't have been ribing you mayn't have been ribing he mayn't have been ribing we mayn't have been ribing you mayn't have been ribing they mayn't have been ribing

Interrogative form

Simple form	V-ing form
may I rib? may you rib? may he rib? may we rib? may you rib? may they rib?	may I be ribing? may you be ribing? may he be ribing? may we be ribing? may you be ribing? may they be ribing?
Perfect	V-ing perfect
may I have ribed? may you have ribed? may he have ribed? may we have ribed? may you have ribed? may they have ribed?	may I have been ribing? may you have been ribing? may he have been ribing? may we have been ribing? may you have been ribing? may they have been ribing?

Interro-negative form

Simple form	V-ing form
mayn't I rib? mayn't you rib? mayn't he rib? mayn't we rib? mayn't you rib? mayn't they rib?	mayn't I be ribing? mayn't you be ribing? mayn't he be ribing? mayn't we be ribing? mayn't you be ribing? mayn't they be ribing?
Perfect	V-ing perfect
mayn't I have ribed? mayn't you have ribed? mayn't he have ribed? mayn't we have ribed? mayn't you have ribed? mayn't they have ribed?	mayn't I have been ribing? mayn't you have been ribing? mayn't he have been ribing? mayn't we have been ribing? mayn't you have been ribing? mayn't they have been ribing?