may refill
Regular verb: refill - refilled- refilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may refill
you may refill
she may refill
we may refill
you may refill
they may refill 	I may be refilling
you may be refilling
she may be refilling
we may be refilling
you may be refilling
they may be refilling	I may have refilled
you may have refilled
she may have refilled
we may have refilled
you may have refilled
they may have refilled	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 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't refill
you mayn't refill
she mayn't refill
we mayn't refill
you mayn't refill
they mayn't refill 	I mayn't be refilling
you mayn't be refilling
she mayn't be refilling
we mayn't be refilling
you mayn't be refilling
they mayn't be refilling	I mayn't have refilled
you mayn't have refilled
she mayn't have refilled
we mayn't have refilled
you mayn't have refilled
they mayn't have refilled	I mayn't have been refilling
you mayn't have been refilling
she mayn't have been refilling
we mayn't have been refilling
you mayn't have been refilling
they mayn't have been refilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I refill?
may you refill?
may she refill?
may we refill?
may you refill?
may they refill? 	may I be refilling?
may you be refilling?
may she be refilling?
may we be refilling?
may you be refilling?
may they be refilling? 	may I have refilled?
may you have refilled?
may she have refilled?
may we have refilled?
may you have refilled?
may they have refilled? 	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 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I refill?
mayn't you refill?
mayn't she refill?
mayn't we refill?
mayn't you refill?
mayn't they refill? 	mayn't I be refilling?
mayn't you be refilling?
mayn't she be refilling?
mayn't we be refilling?
mayn't you be refilling?
mayn't they be refilling? 	mayn't I have refilled?
mayn't you have refilled?
mayn't she have refilled?
mayn't we have refilled?
mayn't you have refilled?
mayn't they have refilled? 	mayn't I have been refilling?
mayn't you have been refilling?
mayn't she have been refilling?
mayn't we have been refilling?
mayn't you have been refilling?
mayn't they have been refilling?