I may participate you may participate he may participate we may participate you may participate they may participate
V-ing form
I may be participating you may be participating he may be participating we may be participating you may be participating they may be participating
Perfect
I may have participated you may have participated he may have participated we may have participated you may have participated they may have participated
V-ing perfect
I may have been participating you may have been participating he may have been participating we may have been participating you may have been participating they may have been participating
Negation
Simple form
I may not participate you may not participate he may not participate we may not participate you may not participate they may not participate
V-ing form
I may not be participating you may not be participating he may not be participating we may not be participating you may not be participating they may not be participating
Perfect
I may not have participated you may not have participated he may not have participated we may not have participated you may not have participated they may not have participated
V-ing perfect
I may not have been participating you may not have been participating he may not have been participating we may not have been participating you may not have been participating they may not have been participating
Interrogative form
Simple form
may I participate? may you participate? may he participate? may we participate? may you participate? may they participate?
V-ing form
may I be participating? may you be participating? may he be participating? may we be participating? may you be participating? may they be participating?
Perfect
may I have participated? may you have participated? may he have participated? may we have participated? may you have participated? may they have participated?
V-ing perfect
may I have been participating? may you have been participating? may he have been participating? may we have been participating? may you have been participating? may they have been participating?
Interro-negative form
Simple form
may I not participate? may you not participate? may he not participate? may we not participate? may you not participate? may they not participate?
V-ing form
may I not be participating? may you not be participating? may he not be participating? may we not be participating? may you not be participating? may they not be participating?
Perfect
may I not have participated? may you not have participated? may he not have participated? may we not have participated? may you not have participated? may they not have participated?
V-ing perfect
may I not have been participating? may you not have been participating? may he not have been participating? may we not have been participating? may you not have been participating? may they not have been participating?