I may place you may place he may place we may place you may place they may place
V-ing form
I may be placing you may be placing he may be placing we may be placing you may be placing they may be placing
Perfect
I may have placed you may have placed he may have placed we may have placed you may have placed they may have placed
V-ing perfect
I may have been placing you may have been placing he may have been placing we may have been placing you may have been placing they may have been placing
Negation
Simple form
I may not place you may not place he may not place we may not place you may not place they may not place
V-ing form
I may not be placing you may not be placing he may not be placing we may not be placing you may not be placing they may not be placing
Perfect
I may not have placed you may not have placed he may not have placed we may not have placed you may not have placed they may not have placed
V-ing perfect
I may not have been placing you may not have been placing he may not have been placing we may not have been placing you may not have been placing they may not have been placing
Interrogative form
Simple form
may I place? may you place? may he place? may we place? may you place? may they place?
V-ing form
may I be placing? may you be placing? may he be placing? may we be placing? may you be placing? may they be placing?
Perfect
may I have placed? may you have placed? may he have placed? may we have placed? may you have placed? may they have placed?
V-ing perfect
may I have been placing? may you have been placing? may he have been placing? may we have been placing? may you have been placing? may they have been placing?
Interro-negative form
Simple form
may I not place? may you not place? may he not place? may we not place? may you not place? may they not place?
V-ing form
may I not be placing? may you not be placing? may he not be placing? may we not be placing? may you not be placing? may they not be placing?
Perfect
may I not have placed? may you not have placed? may he not have placed? may we not have placed? may you not have placed? may they not have placed?
V-ing perfect
may I not have been placing? may you not have been placing? may he not have been placing? may we not have been placing? may you not have been placing? may they not have been placing?