I may mumble you may mumble she may mumble we may mumble you may mumble they may mumble
V-ing form
I may be mumbling you may be mumbling she may be mumbling we may be mumbling you may be mumbling they may be mumbling
Perfect
I may have mumbled you may have mumbled she may have mumbled we may have mumbled you may have mumbled they may have mumbled
V-ing perfect
I may have been mumbling you may have been mumbling she may have been mumbling we may have been mumbling you may have been mumbling they may have been mumbling
Negation
Simple form
I may not mumble you may not mumble she may not mumble we may not mumble you may not mumble they may not mumble
V-ing form
I may not be mumbling you may not be mumbling she may not be mumbling we may not be mumbling you may not be mumbling they may not be mumbling
Perfect
I may not have mumbled you may not have mumbled she may not have mumbled we may not have mumbled you may not have mumbled they may not have mumbled
V-ing perfect
I may not have been mumbling you may not have been mumbling she may not have been mumbling we may not have been mumbling you may not have been mumbling they may not have been mumbling
Interrogative form
Simple form
may I mumble? may you mumble? may she mumble? may we mumble? may you mumble? may they mumble?
V-ing form
may I be mumbling? may you be mumbling? may she be mumbling? may we be mumbling? may you be mumbling? may they be mumbling?
Perfect
may I have mumbled? may you have mumbled? may she have mumbled? may we have mumbled? may you have mumbled? may they have mumbled?
V-ing perfect
may I have been mumbling? may you have been mumbling? may she have been mumbling? may we have been mumbling? may you have been mumbling? may they have been mumbling?
Interro-negative form
Simple form
may I not mumble? may you not mumble? may she not mumble? may we not mumble? may you not mumble? may they not mumble?
V-ing form
may I not be mumbling? may you not be mumbling? may she not be mumbling? may we not be mumbling? may you not be mumbling? may they not be mumbling?
Perfect
may I not have mumbled? may you not have mumbled? may she not have mumbled? may we not have mumbled? may you not have mumbled? may they not have mumbled?
V-ing perfect
may I not have been mumbling? may you not have been mumbling? may she not have been mumbling? may we not have been mumbling? may you not have been mumbling? may they not have been mumbling?