ought to perish
Regular verb: perish - perished- perished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to perish
you ought to perish
she ought to perish
we ought to perish
you ought to perish
they ought to perish 	I ought to be perishing
you ought to be perishing
she ought to be perishing
we ought to be perishing
you ought to be perishing
they ought to be perishing	I ought to have perished
you ought to have perished
she ought to have perished
we ought to have perished
you ought to have perished
they ought to have perished	I ought to have been perishing
you ought to have been perishing
she ought to have been perishing
we ought to have been perishing
you ought to have been perishing
they ought to have been perishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to perish
you oughtn't to perish
she oughtn't to perish
we oughtn't to perish
you oughtn't to perish
they oughtn't to perish 	I oughtn't to be perishing
you oughtn't to be perishing
she oughtn't to be perishing
we oughtn't to be perishing
you oughtn't to be perishing
they oughtn't to be perishing	I oughtn't to have perished
you oughtn't to have perished
she oughtn't to have perished
we oughtn't to have perished
you oughtn't to have perished
they oughtn't to have perished	I oughtn't to have been perishing
you oughtn't to have been perishing
she oughtn't to have been perishing
we oughtn't to have been perishing
you oughtn't to have been perishing
they oughtn't to have been perishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I perish?
ought to you perish?
ought to she perish?
ought to we perish?
ought to you perish?
ought to they perish? 	ought to I be perishing?
ought to you be perishing?
ought to she be perishing?
ought to we be perishing?
ought to you be perishing?
ought to they be perishing? 	ought to I have perished?
ought to you have perished?
ought to she have perished?
ought to we have perished?
ought to you have perished?
ought to they have perished? 	ought to I have been perishing?
ought to you have been perishing?
ought to she have been perishing?
ought to we have been perishing?
ought to you have been perishing?
ought to they have been perishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to perish?
oughtn't you to perish?
oughtn't she to perish?
oughtn't we to perish?
oughtn't you to perish?
oughtn't they to perish? 	oughtn't I to be perishing?
oughtn't you to be perishing?
oughtn't she to be perishing?
oughtn't we to be perishing?
oughtn't you to be perishing?
oughtn't they to be perishing? 	oughtn't I to have perished?
oughtn't you to have perished?
oughtn't she to have perished?
oughtn't we to have perished?
oughtn't you to have perished?
oughtn't they to have perished? 	oughtn't I to have been perishing?
oughtn't you to have been perishing?
oughtn't she to have been perishing?
oughtn't we to have been perishing?
oughtn't you to have been perishing?
oughtn't they to have been perishing?