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
he 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
he 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
he 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
he 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 ought not to perish
you ought not to perish
he ought not to perish
we ought not to perish
you ought not to perish
they ought not to perish 	I ought not to perishing
you ought not to perishing
he ought not to perishing
we ought not to perishing
you ought not to perishing
they ought not to perishing	I ought not to have perished
you ought not to have perished
he ought not to have perished
we ought not to have perished
you ought not to have perished
they ought not to have perished	I ought not to have been perishing
you ought not to have been perishing
he ought not to have been perishing
we ought not to have been perishing
you ought not to have been perishing
they ought not 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 he 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 he 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 he 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 he 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 	
ought I not to perish?
ought you not to perish?
ought he not to perish?
ought we not to perish?
ought you not to perish?
ought they not to perish? 	ought I not to be perishing?
ought you not to be perishing?
ought he not to be perishing?
ought we not to be perishing?
ought you not to be perishing?
ought they not to be perishing? 	ought I not to have perished?
ought you not to have perished?
ought he not to have perished?
ought we not to have perished?
ought you not to have perished?
ought they not to have perished? 	ought I not to have been perishing?
ought you not to have been perishing?
ought he not to have been perishing?
ought we not to have been perishing?
ought you not to have been perishing?
ought they not to have been perishing?