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 mayn't tariff you mayn't tariff he mayn't tariff we mayn't tariff you mayn't tariff they mayn't tariff	I mayn't be tariffing you mayn't be tariffing he mayn't be tariffing we mayn't be tariffing you mayn't be tariffing they mayn't be tariffing
Perfect	V-ing perfect
I mayn't have tariffed you mayn't have tariffed he mayn't have tariffed we mayn't have tariffed you mayn't have tariffed they mayn't have tariffed	I mayn't have been tariffing you mayn't have been tariffing he mayn't have been tariffing we mayn't have been tariffing you mayn't have been tariffing they mayn't 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
mayn't I tariff? mayn't you tariff? mayn't he tariff? mayn't we tariff? mayn't you tariff? mayn't they tariff?	mayn't I be tariffing? mayn't you be tariffing? mayn't he be tariffing? mayn't we be tariffing? mayn't you be tariffing? mayn't they be tariffing?
Perfect	V-ing perfect
mayn't I have tariffed? mayn't you have tariffed? mayn't he have tariffed? mayn't we have tariffed? mayn't you have tariffed? mayn't they have tariffed?	mayn't I have been tariffing? mayn't you have been tariffing? mayn't he have been tariffing? mayn't we have been tariffing? mayn't you have been tariffing? mayn't they have been tariffing?