I may author you may author he may author we may author you may author they may author
V-ing form
I may be authoring you may be authoring he may be authoring we may be authoring you may be authoring they may be authoring
Perfect
I may have authored you may have authored he may have authored we may have authored you may have authored they may have authored
V-ing perfect
I may have been authoring you may have been authoring he may have been authoring we may have been authoring you may have been authoring they may have been authoring
Negation
Simple form
I may not author you may not author he may not author we may not author you may not author they may not author
V-ing form
I may not be authoring you may not be authoring he may not be authoring we may not be authoring you may not be authoring they may not be authoring
Perfect
I may not have authored you may not have authored he may not have authored we may not have authored you may not have authored they may not have authored
V-ing perfect
I may not have been authoring you may not have been authoring he may not have been authoring we may not have been authoring you may not have been authoring they may not have been authoring
Interrogative form
Simple form
may I author? may you author? may he author? may we author? may you author? may they author?
V-ing form
may I be authoring? may you be authoring? may he be authoring? may we be authoring? may you be authoring? may they be authoring?
Perfect
may I have authored? may you have authored? may he have authored? may we have authored? may you have authored? may they have authored?
V-ing perfect
may I have been authoring? may you have been authoring? may he have been authoring? may we have been authoring? may you have been authoring? may they have been authoring?
Interro-negative form
Simple form
may I not author? may you not author? may he not author? may we not author? may you not author? may they not author?
V-ing form
may I not be authoring? may you not be authoring? may he not be authoring? may we not be authoring? may you not be authoring? may they not be authoring?
Perfect
may I not have authored? may you not have authored? may he not have authored? may we not have authored? may you not have authored? may they not have authored?
V-ing perfect
may I not have been authoring? may you not have been authoring? may he not have been authoring? may we not have been authoring? may you not have been authoring? may they not have been authoring?