I may design you may design he may design we may design you may design they may design
V-ing form
I may be designing you may be designing he may be designing we may be designing you may be designing they may be designing
Perfect
I may have designed you may have designed he may have designed we may have designed you may have designed they may have designed
V-ing perfect
I may have been designing you may have been designing he may have been designing we may have been designing you may have been designing they may have been designing
Negation
Simple form
I may not design you may not design he may not design we may not design you may not design they may not design
V-ing form
I may not be designing you may not be designing he may not be designing we may not be designing you may not be designing they may not be designing
Perfect
I may not have designed you may not have designed he may not have designed we may not have designed you may not have designed they may not have designed
V-ing perfect
I may not have been designing you may not have been designing he may not have been designing we may not have been designing you may not have been designing they may not have been designing
Interrogative form
Simple form
may I design? may you design? may he design? may we design? may you design? may they design?
V-ing form
may I be designing? may you be designing? may he be designing? may we be designing? may you be designing? may they be designing?
Perfect
may I have designed? may you have designed? may he have designed? may we have designed? may you have designed? may they have designed?
V-ing perfect
may I have been designing? may you have been designing? may he have been designing? may we have been designing? may you have been designing? may they have been designing?
Interro-negative form
Simple form
may I not design? may you not design? may he not design? may we not design? may you not design? may they not design?
V-ing form
may I not be designing? may you not be designing? may he not be designing? may we not be designing? may you not be designing? may they not be designing?
Perfect
may I not have designed? may you not have designed? may he not have designed? may we not have designed? may you not have designed? may they not have designed?
V-ing perfect
may I not have been designing? may you not have been designing? may he not have been designing? may we not have been designing? may you not have been designing? may they not have been designing?