ought to sprain
Regular verb: sprain - sprained- sprained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sprain
you ought to sprain
he ought to sprain
we ought to sprain
you ought to sprain
they ought to sprain 	I ought to be spraining
you ought to be spraining
he ought to be spraining
we ought to be spraining
you ought to be spraining
they ought to be spraining	I ought to have sprained
you ought to have sprained
he ought to have sprained
we ought to have sprained
you ought to have sprained
they ought to have sprained	I ought to have been spraining
you ought to have been spraining
he ought to have been spraining
we ought to have been spraining
you ought to have been spraining
they ought to have been spraining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sprain
you oughtn't to sprain
he oughtn't to sprain
we oughtn't to sprain
you oughtn't to sprain
they oughtn't to sprain 	I oughtn't to be spraining
you oughtn't to be spraining
he oughtn't to be spraining
we oughtn't to be spraining
you oughtn't to be spraining
they oughtn't to be spraining	I oughtn't to have sprained
you oughtn't to have sprained
he oughtn't to have sprained
we oughtn't to have sprained
you oughtn't to have sprained
they oughtn't to have sprained	I oughtn't to have been spraining
you oughtn't to have been spraining
he oughtn't to have been spraining
we oughtn't to have been spraining
you oughtn't to have been spraining
they oughtn't to have been spraining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sprain?
ought to you sprain?
ought to he sprain?
ought to we sprain?
ought to you sprain?
ought to they sprain? 	ought to I be spraining?
ought to you be spraining?
ought to he be spraining?
ought to we be spraining?
ought to you be spraining?
ought to they be spraining? 	ought to I have sprained?
ought to you have sprained?
ought to he have sprained?
ought to we have sprained?
ought to you have sprained?
ought to they have sprained? 	ought to I have been spraining?
ought to you have been spraining?
ought to he have been spraining?
ought to we have been spraining?
ought to you have been spraining?
ought to they have been spraining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sprain?
oughtn't you to sprain?
oughtn't he to sprain?
oughtn't we to sprain?
oughtn't you to sprain?
oughtn't they to sprain? 	oughtn't I to be spraining?
oughtn't you to be spraining?
oughtn't he to be spraining?
oughtn't we to be spraining?
oughtn't you to be spraining?
oughtn't they to be spraining? 	oughtn't I to have sprained?
oughtn't you to have sprained?
oughtn't he to have sprained?
oughtn't we to have sprained?
oughtn't you to have sprained?
oughtn't they to have sprained? 	oughtn't I to have been spraining?
oughtn't you to have been spraining?
oughtn't he to have been spraining?
oughtn't we to have been spraining?
oughtn't you to have been spraining?
oughtn't they to have been spraining?