I may lump you may lump she may lump we may lump you may lump they may lump
V-ing form
I may be lumping you may be lumping she may be lumping we may be lumping you may be lumping they may be lumping
Perfect
I may have lumped you may have lumped she may have lumped we may have lumped you may have lumped they may have lumped
V-ing perfect
I may have been lumping you may have been lumping she may have been lumping we may have been lumping you may have been lumping they may have been lumping
Negation
Simple form
I may not lump you may not lump she may not lump we may not lump you may not lump they may not lump
V-ing form
I may not be lumping you may not be lumping she may not be lumping we may not be lumping you may not be lumping they may not be lumping
Perfect
I may not have lumped you may not have lumped she may not have lumped we may not have lumped you may not have lumped they may not have lumped
V-ing perfect
I may not have been lumping you may not have been lumping she may not have been lumping we may not have been lumping you may not have been lumping they may not have been lumping
Interrogative form
Simple form
may I lump? may you lump? may she lump? may we lump? may you lump? may they lump?
V-ing form
may I be lumping? may you be lumping? may she be lumping? may we be lumping? may you be lumping? may they be lumping?
Perfect
may I have lumped? may you have lumped? may she have lumped? may we have lumped? may you have lumped? may they have lumped?
V-ing perfect
may I have been lumping? may you have been lumping? may she have been lumping? may we have been lumping? may you have been lumping? may they have been lumping?
Interro-negative form
Simple form
may I not lump? may you not lump? may she not lump? may we not lump? may you not lump? may they not lump?
V-ing form
may I not be lumping? may you not be lumping? may she not be lumping? may we not be lumping? may you not be lumping? may they not be lumping?
Perfect
may I not have lumped? may you not have lumped? may she not have lumped? may we not have lumped? may you not have lumped? may they not have lumped?
V-ing perfect
may I not have been lumping? may you not have been lumping? may she not have been lumping? may we not have been lumping? may you not have been lumping? may they not have been lumping?