can tariff
Verbe régulier : tariff - tariffed- tariffed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can tariff
you can tariff
she can tariff
we can tariff
you can tariff
they can tariff 	I can be tariffing
you can be tariffing
she can be tariffing
we can be tariffing
you can be tariffing
they can be tariffing	I can have tariffed
you can have tariffed
she can have tariffed
we can have tariffed
you can have tariffed
they can have tariffed	I can have been tariffing
you can have been tariffing
she can have been tariffing
we can have been tariffing
you can have been tariffing
they can have been tariffing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot tariff
you cannot tariff
she cannot tariff
we cannot tariff
you cannot tariff
they cannot tariff 	I cannot be tariffing
you cannot be tariffing
she cannot be tariffing
we cannot be tariffing
you cannot be tariffing
they cannot be tariffing	I cannot have tariffed
you cannot have tariffed
she cannot have tariffed
we cannot have tariffed
you cannot have tariffed
they cannot have tariffed	I cannot have been tariffing
you cannot have been tariffing
she cannot have been tariffing
we cannot have been tariffing
you cannot have been tariffing
they cannot have been tariffing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I tariff?
can you tariff?
can she tariff?
can we tariff?
can you tariff?
can they tariff? 	can I be tariffing?
can you be tariffing?
can she be tariffing?
can we be tariffing?
can you be tariffing?
can they be tariffing? 	can I have tariffed?
can you have tariffed?
can she have tariffed?
can we have tariffed?
can you have tariffed?
can they have tariffed? 	can I have been tariffing?
can you have been tariffing?
can she have been tariffing?
can we have been tariffing?
can you have been tariffing?
can they have been tariffing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not tariff?
can you not tariff?
can she not tariff?
can we not tariff?
can you not tariff?
can they not tariff? 	can I not be tariffing?
can you not be tariffing?
can she not be tariffing?
can we not be tariffing?
can you not be tariffing?
can they not be tariffing? 	can I not have tariffed?
can you not have tariffed?
can she not have tariffed?
can we not have tariffed?
can you not have tariffed?
can they not have tariffed? 	can I not have been tariffing?
can you not have been tariffing?
can she not have been tariffing?
can we not have been tariffing?
can you not have been tariffing?
can they not have been tariffing?