may windmill
Regular verb: windmill - windmilled- windmilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may windmill
you may windmill
he may windmill
we may windmill
you may windmill
they may windmill 	I may be windmilling
you may be windmilling
he may be windmilling
we may be windmilling
you may be windmilling
they may be windmilling	I may have windmilled
you may have windmilled
he may have windmilled
we may have windmilled
you may have windmilled
they may have windmilled	I may have been windmilling
you may have been windmilling
he may have been windmilling
we may have been windmilling
you may have been windmilling
they may have been windmilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't windmill
you mayn't windmill
he mayn't windmill
we mayn't windmill
you mayn't windmill
they mayn't windmill 	I mayn't be windmilling
you mayn't be windmilling
he mayn't be windmilling
we mayn't be windmilling
you mayn't be windmilling
they mayn't be windmilling	I mayn't have windmilled
you mayn't have windmilled
he mayn't have windmilled
we mayn't have windmilled
you mayn't have windmilled
they mayn't have windmilled	I mayn't have been windmilling
you mayn't have been windmilling
he mayn't have been windmilling
we mayn't have been windmilling
you mayn't have been windmilling
they mayn't have been windmilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I windmill?
may you windmill?
may he windmill?
may we windmill?
may you windmill?
may they windmill? 	may I be windmilling?
may you be windmilling?
may he be windmilling?
may we be windmilling?
may you be windmilling?
may they be windmilling? 	may I have windmilled?
may you have windmilled?
may he have windmilled?
may we have windmilled?
may you have windmilled?
may they have windmilled? 	may I have been windmilling?
may you have been windmilling?
may he have been windmilling?
may we have been windmilling?
may you have been windmilling?
may they have been windmilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I windmill?
mayn't you windmill?
mayn't he windmill?
mayn't we windmill?
mayn't you windmill?
mayn't they windmill? 	mayn't I be windmilling?
mayn't you be windmilling?
mayn't he be windmilling?
mayn't we be windmilling?
mayn't you be windmilling?
mayn't they be windmilling? 	mayn't I have windmilled?
mayn't you have windmilled?
mayn't he have windmilled?
mayn't we have windmilled?
mayn't you have windmilled?
mayn't they have windmilled? 	mayn't I have been windmilling?
mayn't you have been windmilling?
mayn't he have been windmilling?
mayn't we have been windmilling?
mayn't you have been windmilling?
mayn't they have been windmilling?