ought to prefab
Regular verb: prefab - prefabed- prefabed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prefab
you ought to prefab
he ought to prefab
we ought to prefab
you ought to prefab
they ought to prefab 	I ought to be prefabing
you ought to be prefabing
he ought to be prefabing
we ought to be prefabing
you ought to be prefabing
they ought to be prefabing	I ought to have prefabed
you ought to have prefabed
he ought to have prefabed
we ought to have prefabed
you ought to have prefabed
they ought to have prefabed	I ought to have been prefabing
you ought to have been prefabing
he ought to have been prefabing
we ought to have been prefabing
you ought to have been prefabing
they ought to have been prefabing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to prefab
you oughtn't to prefab
he oughtn't to prefab
we oughtn't to prefab
you oughtn't to prefab
they oughtn't to prefab 	I oughtn't to be prefabing
you oughtn't to be prefabing
he oughtn't to be prefabing
we oughtn't to be prefabing
you oughtn't to be prefabing
they oughtn't to be prefabing	I oughtn't to have prefabed
you oughtn't to have prefabed
he oughtn't to have prefabed
we oughtn't to have prefabed
you oughtn't to have prefabed
they oughtn't to have prefabed	I oughtn't to have been prefabing
you oughtn't to have been prefabing
he oughtn't to have been prefabing
we oughtn't to have been prefabing
you oughtn't to have been prefabing
they oughtn't to have been prefabing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I prefab?
ought to you prefab?
ought to he prefab?
ought to we prefab?
ought to you prefab?
ought to they prefab? 	ought to I be prefabing?
ought to you be prefabing?
ought to he be prefabing?
ought to we be prefabing?
ought to you be prefabing?
ought to they be prefabing? 	ought to I have prefabed?
ought to you have prefabed?
ought to he have prefabed?
ought to we have prefabed?
ought to you have prefabed?
ought to they have prefabed? 	ought to I have been prefabing?
ought to you have been prefabing?
ought to he have been prefabing?
ought to we have been prefabing?
ought to you have been prefabing?
ought to they have been prefabing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to prefab?
oughtn't you to prefab?
oughtn't he to prefab?
oughtn't we to prefab?
oughtn't you to prefab?
oughtn't they to prefab? 	oughtn't I to be prefabing?
oughtn't you to be prefabing?
oughtn't he to be prefabing?
oughtn't we to be prefabing?
oughtn't you to be prefabing?
oughtn't they to be prefabing? 	oughtn't I to have prefabed?
oughtn't you to have prefabed?
oughtn't he to have prefabed?
oughtn't we to have prefabed?
oughtn't you to have prefabed?
oughtn't they to have prefabed? 	oughtn't I to have been prefabing?
oughtn't you to have been prefabing?
oughtn't he to have been prefabing?
oughtn't we to have been prefabing?
oughtn't you to have been prefabing?
oughtn't they to have been prefabing?