I may stale you may stale she may stale we may stale you may stale they may stale
V-ing form
I may be staling you may be staling she may be staling we may be staling you may be staling they may be staling
Perfect
I may have staled you may have staled she may have staled we may have staled you may have staled they may have staled
V-ing perfect
I may have been staling you may have been staling she may have been staling we may have been staling you may have been staling they may have been staling
Negation
Simple form
I may not stale you may not stale she may not stale we may not stale you may not stale they may not stale
V-ing form
I may not be staling you may not be staling she may not be staling we may not be staling you may not be staling they may not be staling
Perfect
I may not have staled you may not have staled she may not have staled we may not have staled you may not have staled they may not have staled
V-ing perfect
I may not have been staling you may not have been staling she may not have been staling we may not have been staling you may not have been staling they may not have been staling
Interrogative form
Simple form
may I stale? may you stale? may she stale? may we stale? may you stale? may they stale?
V-ing form
may I be staling? may you be staling? may she be staling? may we be staling? may you be staling? may they be staling?
Perfect
may I have staled? may you have staled? may she have staled? may we have staled? may you have staled? may they have staled?
V-ing perfect
may I have been staling? may you have been staling? may she have been staling? may we have been staling? may you have been staling? may they have been staling?
Interro-negative form
Simple form
may I not stale? may you not stale? may she not stale? may we not stale? may you not stale? may they not stale?
V-ing form
may I not be staling? may you not be staling? may she not be staling? may we not be staling? may you not be staling? may they not be staling?
Perfect
may I not have staled? may you not have staled? may she not have staled? may we not have staled? may you not have staled? may they not have staled?
V-ing perfect
may I not have been staling? may you not have been staling? may she not have been staling? may we not have been staling? may you not have been staling? may they not have been staling?