ought to tariff
Regular verb: tariff - tariffed- tariffed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to tariff
you oughtn't to tariff
he oughtn't to tariff
we oughtn't to tariff
you oughtn't to tariff
they oughtn't to tariff 	I oughtn't to be tariffing
you oughtn't to be tariffing
he oughtn't to be tariffing
we oughtn't to be tariffing
you oughtn't to be tariffing
they oughtn't to be tariffing	I oughtn't to have tariffed
you oughtn't to have tariffed
he oughtn't to have tariffed
we oughtn't to have tariffed
you oughtn't to have tariffed
they oughtn't to have tariffed	I oughtn't to have been tariffing
you oughtn't to have been tariffing
he oughtn't to have been tariffing
we oughtn't to have been tariffing
you oughtn't to have been tariffing
they oughtn't to have been tariffing	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to tariff?
oughtn't you to tariff?
oughtn't he to tariff?
oughtn't we to tariff?
oughtn't you to tariff?
oughtn't they to tariff? 	oughtn't I to be tariffing?
oughtn't you to be tariffing?
oughtn't he to be tariffing?
oughtn't we to be tariffing?
oughtn't you to be tariffing?
oughtn't they to be tariffing? 	oughtn't I to have tariffed?
oughtn't you to have tariffed?
oughtn't he to have tariffed?
oughtn't we to have tariffed?
oughtn't you to have tariffed?
oughtn't they to have tariffed? 	oughtn't I to have been tariffing?
oughtn't you to have been tariffing?
oughtn't he to have been tariffing?
oughtn't we to have been tariffing?
oughtn't you to have been tariffing?
oughtn't they to have been tariffing?