ought to oil
Regular verb: oil - oiled- oiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to oil
you ought to oil
she ought to oil
we ought to oil
you ought to oil
they ought to oil 	I ought to be oiling
you ought to be oiling
she ought to be oiling
we ought to be oiling
you ought to be oiling
they ought to be oiling	I ought to have oiled
you ought to have oiled
she ought to have oiled
we ought to have oiled
you ought to have oiled
they ought to have oiled	I ought to have been oiling
you ought to have been oiling
she ought to have been oiling
we ought to have been oiling
you ought to have been oiling
they ought to have been oiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to oil
you oughtn't to oil
she oughtn't to oil
we oughtn't to oil
you oughtn't to oil
they oughtn't to oil 	I oughtn't to be oiling
you oughtn't to be oiling
she oughtn't to be oiling
we oughtn't to be oiling
you oughtn't to be oiling
they oughtn't to be oiling	I oughtn't to have oiled
you oughtn't to have oiled
she oughtn't to have oiled
we oughtn't to have oiled
you oughtn't to have oiled
they oughtn't to have oiled	I oughtn't to have been oiling
you oughtn't to have been oiling
she oughtn't to have been oiling
we oughtn't to have been oiling
you oughtn't to have been oiling
they oughtn't to have been oiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I oil?
ought to you oil?
ought to she oil?
ought to we oil?
ought to you oil?
ought to they oil? 	ought to I be oiling?
ought to you be oiling?
ought to she be oiling?
ought to we be oiling?
ought to you be oiling?
ought to they be oiling? 	ought to I have oiled?
ought to you have oiled?
ought to she have oiled?
ought to we have oiled?
ought to you have oiled?
ought to they have oiled? 	ought to I have been oiling?
ought to you have been oiling?
ought to she have been oiling?
ought to we have been oiling?
ought to you have been oiling?
ought to they have been oiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to oil?
oughtn't you to oil?
oughtn't she to oil?
oughtn't we to oil?
oughtn't you to oil?
oughtn't they to oil? 	oughtn't I to be oiling?
oughtn't you to be oiling?
oughtn't she to be oiling?
oughtn't we to be oiling?
oughtn't you to be oiling?
oughtn't they to be oiling? 	oughtn't I to have oiled?
oughtn't you to have oiled?
oughtn't she to have oiled?
oughtn't we to have oiled?
oughtn't you to have oiled?
oughtn't they to have oiled? 	oughtn't I to have been oiling?
oughtn't you to have been oiling?
oughtn't she to have been oiling?
oughtn't we to have been oiling?
oughtn't you to have been oiling?
oughtn't they to have been oiling?