should tariff
Verbe régulier : tariff - tariffed- tariffed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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?