I may labor you may labor he may labor we may labor you may labor they may labor
V-ing form
I may be laboring you may be laboring he may be laboring we may be laboring you may be laboring they may be laboring
Perfect
I may have labored you may have labored he may have labored we may have labored you may have labored they may have labored
V-ing perfect
I may have been laboring you may have been laboring he may have been laboring we may have been laboring you may have been laboring they may have been laboring
Negation
Simple form
I may not labor you may not labor he may not labor we may not labor you may not labor they may not labor
V-ing form
I may not be laboring you may not be laboring he may not be laboring we may not be laboring you may not be laboring they may not be laboring
Perfect
I may not have labored you may not have labored he may not have labored we may not have labored you may not have labored they may not have labored
V-ing perfect
I may not have been laboring you may not have been laboring he may not have been laboring we may not have been laboring you may not have been laboring they may not have been laboring
Interrogative form
Simple form
may I labor? may you labor? may he labor? may we labor? may you labor? may they labor?
V-ing form
may I be laboring? may you be laboring? may he be laboring? may we be laboring? may you be laboring? may they be laboring?
Perfect
may I have labored? may you have labored? may he have labored? may we have labored? may you have labored? may they have labored?
V-ing perfect
may I have been laboring? may you have been laboring? may he have been laboring? may we have been laboring? may you have been laboring? may they have been laboring?
Interro-negative form
Simple form
may I not labor? may you not labor? may he not labor? may we not labor? may you not labor? may they not labor?
V-ing form
may I not be laboring? may you not be laboring? may he not be laboring? may we not be laboring? may you not be laboring? may they not be laboring?
Perfect
may I not have labored? may you not have labored? may he not have labored? may we not have labored? may you not have labored? may they not have labored?
V-ing perfect
may I not have been laboring? may you not have been laboring? may he not have been laboring? may we not have been laboring? may you not have been laboring? may they not have been laboring?