ought to subsist
Regular verb: subsist - subsisted- subsisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to subsist
you ought to subsist
she ought to subsist
we ought to subsist
you ought to subsist
they ought to subsist 	I ought to be subsisting
you ought to be subsisting
she ought to be subsisting
we ought to be subsisting
you ought to be subsisting
they ought to be subsisting	I ought to have subsisted
you ought to have subsisted
she ought to have subsisted
we ought to have subsisted
you ought to have subsisted
they ought to have subsisted	I ought to have been subsisting
you ought to have been subsisting
she ought to have been subsisting
we ought to have been subsisting
you ought to have been subsisting
they ought to have been subsisting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to subsist
you oughtn't to subsist
she oughtn't to subsist
we oughtn't to subsist
you oughtn't to subsist
they oughtn't to subsist 	I oughtn't to be subsisting
you oughtn't to be subsisting
she oughtn't to be subsisting
we oughtn't to be subsisting
you oughtn't to be subsisting
they oughtn't to be subsisting	I oughtn't to have subsisted
you oughtn't to have subsisted
she oughtn't to have subsisted
we oughtn't to have subsisted
you oughtn't to have subsisted
they oughtn't to have subsisted	I oughtn't to have been subsisting
you oughtn't to have been subsisting
she oughtn't to have been subsisting
we oughtn't to have been subsisting
you oughtn't to have been subsisting
they oughtn't to have been subsisting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I subsist?
ought to you subsist?
ought to she subsist?
ought to we subsist?
ought to you subsist?
ought to they subsist? 	ought to I be subsisting?
ought to you be subsisting?
ought to she be subsisting?
ought to we be subsisting?
ought to you be subsisting?
ought to they be subsisting? 	ought to I have subsisted?
ought to you have subsisted?
ought to she have subsisted?
ought to we have subsisted?
ought to you have subsisted?
ought to they have subsisted? 	ought to I have been subsisting?
ought to you have been subsisting?
ought to she have been subsisting?
ought to we have been subsisting?
ought to you have been subsisting?
ought to they have been subsisting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to subsist?
oughtn't you to subsist?
oughtn't she to subsist?
oughtn't we to subsist?
oughtn't you to subsist?
oughtn't they to subsist? 	oughtn't I to be subsisting?
oughtn't you to be subsisting?
oughtn't she to be subsisting?
oughtn't we to be subsisting?
oughtn't you to be subsisting?
oughtn't they to be subsisting? 	oughtn't I to have subsisted?
oughtn't you to have subsisted?
oughtn't she to have subsisted?
oughtn't we to have subsisted?
oughtn't you to have subsisted?
oughtn't they to have subsisted? 	oughtn't I to have been subsisting?
oughtn't you to have been subsisting?
oughtn't she to have been subsisting?
oughtn't we to have been subsisting?
oughtn't you to have been subsisting?
oughtn't they to have been subsisting?