English verb conjugation
MAY TARIFF

Regular verb: tariff - tariffed - tariffed

Affirmation

Simple form	V-ing form
I may tariff you may tariff he may tariff we may tariff you may tariff they may tariff	I may be tariffing you may be tariffing he may be tariffing we may be tariffing you may be tariffing they may be tariffing
Perfect	V-ing perfect
I may have tariffed you may have tariffed he may have tariffed we may have tariffed you may have tariffed they may have tariffed	I may have been tariffing you may have been tariffing he may have been tariffing we may have been tariffing you may have been tariffing they may have been tariffing

Negation

Simple form	V-ing form
I may not tariff you may not tariff he may not tariff we may not tariff you may not tariff they may not tariff	I may not be tariffing you may not be tariffing he may not be tariffing we may not be tariffing you may not be tariffing they may not be tariffing
Perfect	V-ing perfect
I may not have tariffed you may not have tariffed he may not have tariffed we may not have tariffed you may not have tariffed they may not have tariffed	I may not have been tariffing you may not have been tariffing he may not have been tariffing we may not have been tariffing you may not have been tariffing they may not have been tariffing

Interrogative form

Simple form	V-ing form
may I tariff? may you tariff? may he tariff? may we tariff? may you tariff? may they tariff?	may I be tariffing? may you be tariffing? may he be tariffing? may we be tariffing? may you be tariffing? may they be tariffing?
Perfect	V-ing perfect
may I have tariffed? may you have tariffed? may he have tariffed? may we have tariffed? may you have tariffed? may they have tariffed?	may I have been tariffing? may you have been tariffing? may he have been tariffing? may we have been tariffing? may you have been tariffing? may they have been tariffing?

Interro-negative form

Simple form	V-ing form
may I not tariff? may you not tariff? may he not tariff? may we not tariff? may you not tariff? may they not tariff?	may I not be tariffing? may you not be tariffing? may he not be tariffing? may we not be tariffing? may you not be tariffing? may they not be tariffing?
Perfect	V-ing perfect
may I not have tariffed? may you not have tariffed? may he not have tariffed? may we not have tariffed? may you not have tariffed? may they not have tariffed?	may I not have been tariffing? may you not have been tariffing? may he not have been tariffing? may we not have been tariffing? may you not have been tariffing? may they not have been tariffing?