I may gripe you may gripe he may gripe we may gripe you may gripe they may gripe
V-ing form
I may be griping you may be griping he may be griping we may be griping you may be griping they may be griping
Perfect
I may have griped you may have griped he may have griped we may have griped you may have griped they may have griped
V-ing perfect
I may have been griping you may have been griping he may have been griping we may have been griping you may have been griping they may have been griping
Negation
Simple form
I may not gripe you may not gripe he may not gripe we may not gripe you may not gripe they may not gripe
V-ing form
I may not be griping you may not be griping he may not be griping we may not be griping you may not be griping they may not be griping
Perfect
I may not have griped you may not have griped he may not have griped we may not have griped you may not have griped they may not have griped
V-ing perfect
I may not have been griping you may not have been griping he may not have been griping we may not have been griping you may not have been griping they may not have been griping
Interrogative form
Simple form
may I gripe? may you gripe? may he gripe? may we gripe? may you gripe? may they gripe?
V-ing form
may I be griping? may you be griping? may he be griping? may we be griping? may you be griping? may they be griping?
Perfect
may I have griped? may you have griped? may he have griped? may we have griped? may you have griped? may they have griped?
V-ing perfect
may I have been griping? may you have been griping? may he have been griping? may we have been griping? may you have been griping? may they have been griping?
Interro-negative form
Simple form
may I not gripe? may you not gripe? may he not gripe? may we not gripe? may you not gripe? may they not gripe?
V-ing form
may I not be griping? may you not be griping? may he not be griping? may we not be griping? may you not be griping? may they not be griping?
Perfect
may I not have griped? may you not have griped? may he not have griped? may we not have griped? may you not have griped? may they not have griped?
V-ing perfect
may I not have been griping? may you not have been griping? may he not have been griping? may we not have been griping? may you not have been griping? may they not have been griping?