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 may not grump you may not grump he may not grump we may not grump you may not grump they may not grump	I may not be grumping you may not be grumping he may not be grumping we may not be grumping you may not be grumping they may not be grumping
Perfect	V-ing perfect
I may not have grumped you may not have grumped he may not have grumped we may not have grumped you may not have grumped they may not have grumped	I may not have been grumping you may not have been grumping he may not have been grumping we may not have been grumping you may not have been grumping they may not 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
may I not grump? may you not grump? may he not grump? may we not grump? may you not grump? may they not grump?	may I not be grumping? may you not be grumping? may he not be grumping? may we not be grumping? may you not be grumping? may they not be grumping?
Perfect	V-ing perfect
may I not have grumped? may you not have grumped? may he not have grumped? may we not have grumped? may you not have grumped? may they not have grumped?	may I not have been grumping? may you not have been grumping? may he not have been grumping? may we not have been grumping? may you not have been grumping? may they not have been grumping?