ought to crater
Regular verb: crater - cratered- cratered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to crater
you ought to crater
he ought to crater
we ought to crater
you ought to crater
they ought to crater 	I ought to be cratering
you ought to be cratering
he ought to be cratering
we ought to be cratering
you ought to be cratering
they ought to be cratering	I ought to have cratered
you ought to have cratered
he ought to have cratered
we ought to have cratered
you ought to have cratered
they ought to have cratered	I ought to have been cratering
you ought to have been cratering
he ought to have been cratering
we ought to have been cratering
you ought to have been cratering
they ought to have been cratering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to crater
you oughtn't to crater
he oughtn't to crater
we oughtn't to crater
you oughtn't to crater
they oughtn't to crater 	I oughtn't to be cratering
you oughtn't to be cratering
he oughtn't to be cratering
we oughtn't to be cratering
you oughtn't to be cratering
they oughtn't to be cratering	I oughtn't to have cratered
you oughtn't to have cratered
he oughtn't to have cratered
we oughtn't to have cratered
you oughtn't to have cratered
they oughtn't to have cratered	I oughtn't to have been cratering
you oughtn't to have been cratering
he oughtn't to have been cratering
we oughtn't to have been cratering
you oughtn't to have been cratering
they oughtn't to have been cratering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I crater?
ought to you crater?
ought to he crater?
ought to we crater?
ought to you crater?
ought to they crater? 	ought to I be cratering?
ought to you be cratering?
ought to he be cratering?
ought to we be cratering?
ought to you be cratering?
ought to they be cratering? 	ought to I have cratered?
ought to you have cratered?
ought to he have cratered?
ought to we have cratered?
ought to you have cratered?
ought to they have cratered? 	ought to I have been cratering?
ought to you have been cratering?
ought to he have been cratering?
ought to we have been cratering?
ought to you have been cratering?
ought to they have been cratering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to crater?
oughtn't you to crater?
oughtn't he to crater?
oughtn't we to crater?
oughtn't you to crater?
oughtn't they to crater? 	oughtn't I to be cratering?
oughtn't you to be cratering?
oughtn't he to be cratering?
oughtn't we to be cratering?
oughtn't you to be cratering?
oughtn't they to be cratering? 	oughtn't I to have cratered?
oughtn't you to have cratered?
oughtn't he to have cratered?
oughtn't we to have cratered?
oughtn't you to have cratered?
oughtn't they to have cratered? 	oughtn't I to have been cratering?
oughtn't you to have been cratering?
oughtn't he to have been cratering?
oughtn't we to have been cratering?
oughtn't you to have been cratering?
oughtn't they to have been cratering?