English verb conjugation
SHOULD TARIFF

Regular verb: tariff - tariffed - tariffed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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