English verb conjugation
MAY GRUMP

Regular verb: grump - grumped - grumped

Affirmation

Simple form	V-ing form
I may grump you may grump he may grump we may grump you may grump they may grump	I may be grumping you may be grumping he may be grumping we may be grumping you may be grumping they may be grumping
Perfect	V-ing perfect
I may have grumped you may have grumped he may have grumped we may have grumped you may have grumped they may have grumped	I may have been grumping you may have been grumping he may have been grumping we may have been grumping you may have been grumping they may have been grumping

Negation

Simple form	V-ing form
I mayn't grump you mayn't grump he mayn't grump we mayn't grump you mayn't grump they mayn't grump	I mayn't be grumping you mayn't be grumping he mayn't be grumping we mayn't be grumping you mayn't be grumping they mayn't be grumping
Perfect	V-ing perfect
I mayn't have grumped you mayn't have grumped he mayn't have grumped we mayn't have grumped you mayn't have grumped they mayn't have grumped	I mayn't have been grumping you mayn't have been grumping he mayn't have been grumping we mayn't have been grumping you mayn't have been grumping they mayn't have been grumping

Interrogative form

Simple form	V-ing form
may I grump? may you grump? may he grump? may we grump? may you grump? may they grump?	may I be grumping? may you be grumping? may he be grumping? may we be grumping? may you be grumping? may they be grumping?
Perfect	V-ing perfect
may I have grumped? may you have grumped? may he have grumped? may we have grumped? may you have grumped? may they have grumped?	may I have been grumping? may you have been grumping? may he have been grumping? may we have been grumping? may you have been grumping? may they have been grumping?

Interro-negative form

Simple form	V-ing form
mayn't I grump? mayn't you grump? mayn't he grump? mayn't we grump? mayn't you grump? mayn't they grump?	mayn't I be grumping? mayn't you be grumping? mayn't he be grumping? mayn't we be grumping? mayn't you be grumping? mayn't they be grumping?
Perfect	V-ing perfect
mayn't I have grumped? mayn't you have grumped? mayn't he have grumped? mayn't we have grumped? mayn't you have grumped? mayn't they have grumped?	mayn't I have been grumping? mayn't you have been grumping? mayn't he have been grumping? mayn't we have been grumping? mayn't you have been grumping? mayn't they have been grumping?