may refund
Regular verb: refund - refunded- refunded

Affirmation 	
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I may refund
you may refund
she may refund
we may refund
you may refund
they may refund 	I may be refunding
you may be refunding
she may be refunding
we may be refunding
you may be refunding
they may be refunding	I may have refunded
you may have refunded
she may have refunded
we may have refunded
you may have refunded
they may have refunded	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 	
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I may not refund
you may not refund
she may not refund
we may not refund
you may not refund
they may not refund 	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	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	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 	
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may I refund?
may you refund?
may she refund?
may we refund?
may you refund?
may they refund? 	may I be refunding?
may you be refunding?
may she be refunding?
may we be refunding?
may you be refunding?
may they be refunding? 	may I have refunded?
may you have refunded?
may she have refunded?
may we have refunded?
may you have refunded?
may they have refunded? 	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 	V-ing form 	Perfect 	V-ing perfect 	
may I not refund?
may you not refund?
may she not refund?
may we not refund?
may you not refund?
may they not refund? 	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? 	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? 	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?