ought to collapse
Regular verb: collapse - collapsed- collapsed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to collapse
you ought to collapse
he ought to collapse
we ought to collapse
you ought to collapse
they ought to collapse 	I ought to be collapsing
you ought to be collapsing
he ought to be collapsing
we ought to be collapsing
you ought to be collapsing
they ought to be collapsing	I ought to have collapsed
you ought to have collapsed
he ought to have collapsed
we ought to have collapsed
you ought to have collapsed
they ought to have collapsed	I ought to have been collapsing
you ought to have been collapsing
he ought to have been collapsing
we ought to have been collapsing
you ought to have been collapsing
they ought to have been collapsing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to collapse
you oughtn't to collapse
he oughtn't to collapse
we oughtn't to collapse
you oughtn't to collapse
they oughtn't to collapse 	I oughtn't to be collapsing
you oughtn't to be collapsing
he oughtn't to be collapsing
we oughtn't to be collapsing
you oughtn't to be collapsing
they oughtn't to be collapsing	I oughtn't to have collapsed
you oughtn't to have collapsed
he oughtn't to have collapsed
we oughtn't to have collapsed
you oughtn't to have collapsed
they oughtn't to have collapsed	I oughtn't to have been collapsing
you oughtn't to have been collapsing
he oughtn't to have been collapsing
we oughtn't to have been collapsing
you oughtn't to have been collapsing
they oughtn't to have been collapsing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I collapse?
ought to you collapse?
ought to he collapse?
ought to we collapse?
ought to you collapse?
ought to they collapse? 	ought to I be collapsing?
ought to you be collapsing?
ought to he be collapsing?
ought to we be collapsing?
ought to you be collapsing?
ought to they be collapsing? 	ought to I have collapsed?
ought to you have collapsed?
ought to he have collapsed?
ought to we have collapsed?
ought to you have collapsed?
ought to they have collapsed? 	ought to I have been collapsing?
ought to you have been collapsing?
ought to he have been collapsing?
ought to we have been collapsing?
ought to you have been collapsing?
ought to they have been collapsing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to collapse?
oughtn't you to collapse?
oughtn't he to collapse?
oughtn't we to collapse?
oughtn't you to collapse?
oughtn't they to collapse? 	oughtn't I to be collapsing?
oughtn't you to be collapsing?
oughtn't he to be collapsing?
oughtn't we to be collapsing?
oughtn't you to be collapsing?
oughtn't they to be collapsing? 	oughtn't I to have collapsed?
oughtn't you to have collapsed?
oughtn't he to have collapsed?
oughtn't we to have collapsed?
oughtn't you to have collapsed?
oughtn't they to have collapsed? 	oughtn't I to have been collapsing?
oughtn't you to have been collapsing?
oughtn't he to have been collapsing?
oughtn't we to have been collapsing?
oughtn't you to have been collapsing?
oughtn't they to have been collapsing?