I may duel you may duel he may duel we may duel you may duel they may duel
V-ing form
I may be dueling you may be dueling he may be dueling we may be dueling you may be dueling they may be dueling
Perfect
I may have dueled you may have dueled he may have dueled we may have dueled you may have dueled they may have dueled
V-ing perfect
I may have been dueling you may have been dueling he may have been dueling we may have been dueling you may have been dueling they may have been dueling
Negation
Simple form
I may not duel you may not duel he may not duel we may not duel you may not duel they may not duel
V-ing form
I may not be dueling you may not be dueling he may not be dueling we may not be dueling you may not be dueling they may not be dueling
Perfect
I may not have dueled you may not have dueled he may not have dueled we may not have dueled you may not have dueled they may not have dueled
V-ing perfect
I may not have been dueling you may not have been dueling he may not have been dueling we may not have been dueling you may not have been dueling they may not have been dueling
Interrogative form
Simple form
may I duel? may you duel? may he duel? may we duel? may you duel? may they duel?
V-ing form
may I be dueling? may you be dueling? may he be dueling? may we be dueling? may you be dueling? may they be dueling?
Perfect
may I have dueled? may you have dueled? may he have dueled? may we have dueled? may you have dueled? may they have dueled?
V-ing perfect
may I have been dueling? may you have been dueling? may he have been dueling? may we have been dueling? may you have been dueling? may they have been dueling?
Interro-negative form
Simple form
may I not duel? may you not duel? may he not duel? may we not duel? may you not duel? may they not duel?
V-ing form
may I not be dueling? may you not be dueling? may he not be dueling? may we not be dueling? may you not be dueling? may they not be dueling?
Perfect
may I not have dueled? may you not have dueled? may he not have dueled? may we not have dueled? may you not have dueled? may they not have dueled?
V-ing perfect
may I not have been dueling? may you not have been dueling? may he not have been dueling? may we not have been dueling? may you not have been dueling? may they not have been dueling?