ought to calculate
Regular verb: calculate - calculated- calculated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to calculate
you ought to calculate
he ought to calculate
we ought to calculate
you ought to calculate
they ought to calculate 	I ought to be calculating
you ought to be calculating
he ought to be calculating
we ought to be calculating
you ought to be calculating
they ought to be calculating	I ought to have calculated
you ought to have calculated
he ought to have calculated
we ought to have calculated
you ought to have calculated
they ought to have calculated	I ought to have been calculating
you ought to have been calculating
he ought to have been calculating
we ought to have been calculating
you ought to have been calculating
they ought to have been calculating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to calculate
you oughtn't to calculate
he oughtn't to calculate
we oughtn't to calculate
you oughtn't to calculate
they oughtn't to calculate 	I oughtn't to be calculating
you oughtn't to be calculating
he oughtn't to be calculating
we oughtn't to be calculating
you oughtn't to be calculating
they oughtn't to be calculating	I oughtn't to have calculated
you oughtn't to have calculated
he oughtn't to have calculated
we oughtn't to have calculated
you oughtn't to have calculated
they oughtn't to have calculated	I oughtn't to have been calculating
you oughtn't to have been calculating
he oughtn't to have been calculating
we oughtn't to have been calculating
you oughtn't to have been calculating
they oughtn't to have been calculating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I calculate?
ought to you calculate?
ought to he calculate?
ought to we calculate?
ought to you calculate?
ought to they calculate? 	ought to I be calculating?
ought to you be calculating?
ought to he be calculating?
ought to we be calculating?
ought to you be calculating?
ought to they be calculating? 	ought to I have calculated?
ought to you have calculated?
ought to he have calculated?
ought to we have calculated?
ought to you have calculated?
ought to they have calculated? 	ought to I have been calculating?
ought to you have been calculating?
ought to he have been calculating?
ought to we have been calculating?
ought to you have been calculating?
ought to they have been calculating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to calculate?
oughtn't you to calculate?
oughtn't he to calculate?
oughtn't we to calculate?
oughtn't you to calculate?
oughtn't they to calculate? 	oughtn't I to be calculating?
oughtn't you to be calculating?
oughtn't he to be calculating?
oughtn't we to be calculating?
oughtn't you to be calculating?
oughtn't they to be calculating? 	oughtn't I to have calculated?
oughtn't you to have calculated?
oughtn't he to have calculated?
oughtn't we to have calculated?
oughtn't you to have calculated?
oughtn't they to have calculated? 	oughtn't I to have been calculating?
oughtn't you to have been calculating?
oughtn't he to have been calculating?
oughtn't we to have been calculating?
oughtn't you to have been calculating?
oughtn't they to have been calculating?