English verb conjugation
MAY KNOW

Irregular verb: know - knew - known

Affirmation

Simple form	V-ing form
I may know you may know he may know we may know you may know they may know	I may be knowing you may be knowing he may be knowing we may be knowing you may be knowing they may be knowing
Perfect	V-ing perfect
I may have known you may have known he may have known we may have known you may have known they may have known	I may have been knowing you may have been knowing he may have been knowing we may have been knowing you may have been knowing they may have been knowing

Negation

Simple form	V-ing form
I mayn't know you mayn't know he mayn't know we mayn't know you mayn't know they mayn't know	I mayn't be knowing you mayn't be knowing he mayn't be knowing we mayn't be knowing you mayn't be knowing they mayn't be knowing
Perfect	V-ing perfect
I mayn't have known you mayn't have known he mayn't have known we mayn't have known you mayn't have known they mayn't have known	I mayn't have been knowing you mayn't have been knowing he mayn't have been knowing we mayn't have been knowing you mayn't have been knowing they mayn't have been knowing

Interrogative form

Simple form	V-ing form
may I know? may you know? may he know? may we know? may you know? may they know?	may I be knowing? may you be knowing? may he be knowing? may we be knowing? may you be knowing? may they be knowing?
Perfect	V-ing perfect
may I have known? may you have known? may he have known? may we have known? may you have known? may they have known?	may I have been knowing? may you have been knowing? may he have been knowing? may we have been knowing? may you have been knowing? may they have been knowing?

Interro-negative form

Simple form	V-ing form
mayn't I know? mayn't you know? mayn't he know? mayn't we know? mayn't you know? mayn't they know?	mayn't I be knowing? mayn't you be knowing? mayn't he be knowing? mayn't we be knowing? mayn't you be knowing? mayn't they be knowing?
Perfect	V-ing perfect
mayn't I have known? mayn't you have known? mayn't he have known? mayn't we have known? mayn't you have known? mayn't they have known?	mayn't I have been knowing? mayn't you have been knowing? mayn't he have been knowing? mayn't we have been knowing? mayn't you have been knowing? mayn't they have been knowing?