I may refund you may refund she may refund we may refund you may refund they may refund
V-ing form
I may be refunding you may be refunding she may be refunding we may be refunding you may be refunding they may be refunding
Perfect
I may have refunded you may have refunded she may have refunded we may have refunded you may have refunded they may have refunded
V-ing perfect
I may have been refunding you may have been refunding she may have been refunding we may have been refunding you may have been refunding they may have been refunding
Negation
Simple form
I may not refund you may not refund she may not refund we may not refund you may not refund they may not refund
V-ing form
I may not be refunding you may not be refunding she may not be refunding we may not be refunding you may not be refunding they may not be refunding
Perfect
I may not have refunded you may not have refunded she may not have refunded we may not have refunded you may not have refunded they may not have refunded
V-ing perfect
I may not have been refunding you may not have been refunding she may not have been refunding we may not have been refunding you may not have been refunding they may not have been refunding
Interrogative form
Simple form
may I refund? may you refund? may she refund? may we refund? may you refund? may they refund?
V-ing form
may I be refunding? may you be refunding? may she be refunding? may we be refunding? may you be refunding? may they be refunding?
Perfect
may I have refunded? may you have refunded? may she have refunded? may we have refunded? may you have refunded? may they have refunded?
V-ing perfect
may I have been refunding? may you have been refunding? may she have been refunding? may we have been refunding? may you have been refunding? may they have been refunding?
Interro-negative form
Simple form
may I not refund? may you not refund? may she not refund? may we not refund? may you not refund? may they not refund?
V-ing form
may I not be refunding? may you not be refunding? may she not be refunding? may we not be refunding? may you not be refunding? may they not be refunding?
Perfect
may I not have refunded? may you not have refunded? may she not have refunded? may we not have refunded? may you not have refunded? may they not have refunded?
V-ing perfect
may I not have been refunding? may you not have been refunding? may she not have been refunding? may we not have been refunding? may you not have been refunding? may they not have been refunding?