I may turn you may turn he may turn we may turn you may turn they may turn
V-ing form
I may be turning you may be turning he may be turning we may be turning you may be turning they may be turning
Perfect
I may have turned you may have turned he may have turned we may have turned you may have turned they may have turned
V-ing perfect
I may have been turning you may have been turning he may have been turning we may have been turning you may have been turning they may have been turning
Negation
Simple form
I may not turn you may not turn he may not turn we may not turn you may not turn they may not turn
V-ing form
I may not be turning you may not be turning he may not be turning we may not be turning you may not be turning they may not be turning
Perfect
I may not have turned you may not have turned he may not have turned we may not have turned you may not have turned they may not have turned
V-ing perfect
I may not have been turning you may not have been turning he may not have been turning we may not have been turning you may not have been turning they may not have been turning
Interrogative form
Simple form
may I turn? may you turn? may he turn? may we turn? may you turn? may they turn?
V-ing form
may I be turning? may you be turning? may he be turning? may we be turning? may you be turning? may they be turning?
Perfect
may I have turned? may you have turned? may he have turned? may we have turned? may you have turned? may they have turned?
V-ing perfect
may I have been turning? may you have been turning? may he have been turning? may we have been turning? may you have been turning? may they have been turning?
Interro-negative form
Simple form
may I not turn? may you not turn? may he not turn? may we not turn? may you not turn? may they not turn?
V-ing form
may I not be turning? may you not be turning? may he not be turning? may we not be turning? may you not be turning? may they not be turning?
Perfect
may I not have turned? may you not have turned? may he not have turned? may we not have turned? may you not have turned? may they not have turned?
V-ing perfect
may I not have been turning? may you not have been turning? may he not have been turning? may we not have been turning? may you not have been turning? may they not have been turning?