I may still you may still he may still we may still you may still they may still
V-ing form
I may be stilling you may be stilling he may be stilling we may be stilling you may be stilling they may be stilling
Perfect
I may have stilled you may have stilled he may have stilled we may have stilled you may have stilled they may have stilled
V-ing perfect
I may have been stilling you may have been stilling he may have been stilling we may have been stilling you may have been stilling they may have been stilling
Negation
Simple form
I mayn't still you mayn't still he mayn't still we mayn't still you mayn't still they mayn't still
V-ing form
I mayn't be stilling you mayn't be stilling he mayn't be stilling we mayn't be stilling you mayn't be stilling they mayn't be stilling
Perfect
I mayn't have stilled you mayn't have stilled he mayn't have stilled we mayn't have stilled you mayn't have stilled they mayn't have stilled
V-ing perfect
I mayn't have been stilling you mayn't have been stilling he mayn't have been stilling we mayn't have been stilling you mayn't have been stilling they mayn't have been stilling
Interrogative form
Simple form
may I still? may you still? may he still? may we still? may you still? may they still?
V-ing form
may I be stilling? may you be stilling? may he be stilling? may we be stilling? may you be stilling? may they be stilling?
Perfect
may I have stilled? may you have stilled? may he have stilled? may we have stilled? may you have stilled? may they have stilled?
V-ing perfect
may I have been stilling? may you have been stilling? may he have been stilling? may we have been stilling? may you have been stilling? may they have been stilling?
Interro-negative form
Simple form
mayn't I still? mayn't you still? mayn't he still? mayn't we still? mayn't you still? mayn't they still?
V-ing form
mayn't I be stilling? mayn't you be stilling? mayn't he be stilling? mayn't we be stilling? mayn't you be stilling? mayn't they be stilling?
Perfect
mayn't I have stilled? mayn't you have stilled? mayn't he have stilled? mayn't we have stilled? mayn't you have stilled? mayn't they have stilled?
V-ing perfect
mayn't I have been stilling? mayn't you have been stilling? mayn't he have been stilling? mayn't we have been stilling? mayn't you have been stilling? mayn't they have been stilling?