I may vibrate you may vibrate he may vibrate we may vibrate you may vibrate they may vibrate
V-ing form
I may be vibrating you may be vibrating he may be vibrating we may be vibrating you may be vibrating they may be vibrating
Perfect
I may have vibrated you may have vibrated he may have vibrated we may have vibrated you may have vibrated they may have vibrated
V-ing perfect
I may have been vibrating you may have been vibrating he may have been vibrating we may have been vibrating you may have been vibrating they may have been vibrating
Negation
Simple form
I may not vibrate you may not vibrate he may not vibrate we may not vibrate you may not vibrate they may not vibrate
V-ing form
I may not be vibrating you may not be vibrating he may not be vibrating we may not be vibrating you may not be vibrating they may not be vibrating
Perfect
I may not have vibrated you may not have vibrated he may not have vibrated we may not have vibrated you may not have vibrated they may not have vibrated
V-ing perfect
I may not have been vibrating you may not have been vibrating he may not have been vibrating we may not have been vibrating you may not have been vibrating they may not have been vibrating
Interrogative form
Simple form
may I vibrate? may you vibrate? may he vibrate? may we vibrate? may you vibrate? may they vibrate?
V-ing form
may I be vibrating? may you be vibrating? may he be vibrating? may we be vibrating? may you be vibrating? may they be vibrating?
Perfect
may I have vibrated? may you have vibrated? may he have vibrated? may we have vibrated? may you have vibrated? may they have vibrated?
V-ing perfect
may I have been vibrating? may you have been vibrating? may he have been vibrating? may we have been vibrating? may you have been vibrating? may they have been vibrating?
Interro-negative form
Simple form
may I not vibrate? may you not vibrate? may he not vibrate? may we not vibrate? may you not vibrate? may they not vibrate?
V-ing form
may I not be vibrating? may you not be vibrating? may he not be vibrating? may we not be vibrating? may you not be vibrating? may they not be vibrating?
Perfect
may I not have vibrated? may you not have vibrated? may he not have vibrated? may we not have vibrated? may you not have vibrated? may they not have vibrated?
V-ing perfect
may I not have been vibrating? may you not have been vibrating? may he not have been vibrating? may we not have been vibrating? may you not have been vibrating? may they not have been vibrating?