I may hello you may hello he may hello we may hello you may hello they may hello
V-ing form
I may be helloing you may be helloing he may be helloing we may be helloing you may be helloing they may be helloing
Perfect
I may have helloed you may have helloed he may have helloed we may have helloed you may have helloed they may have helloed
V-ing perfect
I may have been helloing you may have been helloing he may have been helloing we may have been helloing you may have been helloing they may have been helloing
Negation
Simple form
I may not hello you may not hello he may not hello we may not hello you may not hello they may not hello
V-ing form
I may not be helloing you may not be helloing he may not be helloing we may not be helloing you may not be helloing they may not be helloing
Perfect
I may not have helloed you may not have helloed he may not have helloed we may not have helloed you may not have helloed they may not have helloed
V-ing perfect
I may not have been helloing you may not have been helloing he may not have been helloing we may not have been helloing you may not have been helloing they may not have been helloing
Interrogative form
Simple form
may I hello? may you hello? may he hello? may we hello? may you hello? may they hello?
V-ing form
may I be helloing? may you be helloing? may he be helloing? may we be helloing? may you be helloing? may they be helloing?
Perfect
may I have helloed? may you have helloed? may he have helloed? may we have helloed? may you have helloed? may they have helloed?
V-ing perfect
may I have been helloing? may you have been helloing? may he have been helloing? may we have been helloing? may you have been helloing? may they have been helloing?
Interro-negative form
Simple form
may I not hello? may you not hello? may he not hello? may we not hello? may you not hello? may they not hello?
V-ing form
may I not be helloing? may you not be helloing? may he not be helloing? may we not be helloing? may you not be helloing? may they not be helloing?
Perfect
may I not have helloed? may you not have helloed? may he not have helloed? may we not have helloed? may you not have helloed? may they not have helloed?
V-ing perfect
may I not have been helloing? may you not have been helloing? may he not have been helloing? may we not have been helloing? may you not have been helloing? may they not have been helloing?