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