I may practice you may practice he may practice we may practice you may practice they may practice
V-ing form
I may be practicing you may be practicing he may be practicing we may be practicing you may be practicing they may be practicing
Perfect
I may have practiced you may have practiced he may have practiced we may have practiced you may have practiced they may have practiced
V-ing perfect
I may have been practicing you may have been practicing he may have been practicing we may have been practicing you may have been practicing they may have been practicing
Negation
Simple form
I may not practice you may not practice he may not practice we may not practice you may not practice they may not practice
V-ing form
I may not be practicing you may not be practicing he may not be practicing we may not be practicing you may not be practicing they may not be practicing
Perfect
I may not have practiced you may not have practiced he may not have practiced we may not have practiced you may not have practiced they may not have practiced
V-ing perfect
I may not have been practicing you may not have been practicing he may not have been practicing we may not have been practicing you may not have been practicing they may not have been practicing
Interrogative form
Simple form
may I practice? may you practice? may he practice? may we practice? may you practice? may they practice?
V-ing form
may I be practicing? may you be practicing? may he be practicing? may we be practicing? may you be practicing? may they be practicing?
Perfect
may I have practiced? may you have practiced? may he have practiced? may we have practiced? may you have practiced? may they have practiced?
V-ing perfect
may I have been practicing? may you have been practicing? may he have been practicing? may we have been practicing? may you have been practicing? may they have been practicing?
Interro-negative form
Simple form
may I not practice? may you not practice? may he not practice? may we not practice? may you not practice? may they not practice?
V-ing form
may I not be practicing? may you not be practicing? may he not be practicing? may we not be practicing? may you not be practicing? may they not be practicing?
Perfect
may I not have practiced? may you not have practiced? may he not have practiced? may we not have practiced? may you not have practiced? may they not have practiced?
V-ing perfect
may I not have been practicing? may you not have been practicing? may he not have been practicing? may we not have been practicing? may you not have been practicing? may they not have been practicing?