may refine
Regular verb: refine - refined- refined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may refine
you may refine
he may refine
we may refine
you may refine
they may refine 	I may be refining
you may be refining
he may be refining
we may be refining
you may be refining
they may be refining	I may have refined
you may have refined
he may have refined
we may have refined
you may have refined
they may have refined	I may have been refining
you may have been refining
he may have been refining
we may have been refining
you may have been refining
they may have been refining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't refine
you mayn't refine
he mayn't refine
we mayn't refine
you mayn't refine
they mayn't refine 	I mayn't be refining
you mayn't be refining
he mayn't be refining
we mayn't be refining
you mayn't be refining
they mayn't be refining	I mayn't have refined
you mayn't have refined
he mayn't have refined
we mayn't have refined
you mayn't have refined
they mayn't have refined	I mayn't have been refining
you mayn't have been refining
he mayn't have been refining
we mayn't have been refining
you mayn't have been refining
they mayn't have been refining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I refine?
may you refine?
may he refine?
may we refine?
may you refine?
may they refine? 	may I be refining?
may you be refining?
may he be refining?
may we be refining?
may you be refining?
may they be refining? 	may I have refined?
may you have refined?
may he have refined?
may we have refined?
may you have refined?
may they have refined? 	may I have been refining?
may you have been refining?
may he have been refining?
may we have been refining?
may you have been refining?
may they have been refining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I refine?
mayn't you refine?
mayn't he refine?
mayn't we refine?
mayn't you refine?
mayn't they refine? 	mayn't I be refining?
mayn't you be refining?
mayn't he be refining?
mayn't we be refining?
mayn't you be refining?
mayn't they be refining? 	mayn't I have refined?
mayn't you have refined?
mayn't he have refined?
mayn't we have refined?
mayn't you have refined?
mayn't they have refined? 	mayn't I have been refining?
mayn't you have been refining?
mayn't he have been refining?
mayn't we have been refining?
mayn't you have been refining?
mayn't they have been refining?