I may refill you may refill she may refill we may refill you may refill they may refill
V-ing form
I may be refilling you may be refilling she may be refilling we may be refilling you may be refilling they may be refilling
Perfect
I may have refilled you may have refilled she may have refilled we may have refilled you may have refilled they may have refilled
V-ing perfect
I may have been refilling you may have been refilling she may have been refilling we may have been refilling you may have been refilling they may have been refilling
Negation
Simple form
I may not refill you may not refill she may not refill we may not refill you may not refill they may not refill
V-ing form
I may not be refilling you may not be refilling she may not be refilling we may not be refilling you may not be refilling they may not be refilling
Perfect
I may not have refilled you may not have refilled she may not have refilled we may not have refilled you may not have refilled they may not have refilled
V-ing perfect
I may not have been refilling you may not have been refilling she may not have been refilling we may not have been refilling you may not have been refilling they may not have been refilling
Interrogative form
Simple form
may I refill? may you refill? may she refill? may we refill? may you refill? may they refill?
V-ing form
may I be refilling? may you be refilling? may she be refilling? may we be refilling? may you be refilling? may they be refilling?
Perfect
may I have refilled? may you have refilled? may she have refilled? may we have refilled? may you have refilled? may they have refilled?
V-ing perfect
may I have been refilling? may you have been refilling? may she have been refilling? may we have been refilling? may you have been refilling? may they have been refilling?
Interro-negative form
Simple form
may I not refill? may you not refill? may she not refill? may we not refill? may you not refill? may they not refill?
V-ing form
may I not be refilling? may you not be refilling? may she not be refilling? may we not be refilling? may you not be refilling? may they not be refilling?
Perfect
may I not have refilled? may you not have refilled? may she not have refilled? may we not have refilled? may you not have refilled? may they not have refilled?
V-ing perfect
may I not have been refilling? may you not have been refilling? may she not have been refilling? may we not have been refilling? may you not have been refilling? may they not have been refilling?