ought to stimulate
Regular verb: stimulate - stimulated- stimulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to stimulate
you ought to stimulate
she ought to stimulate
we ought to stimulate
you ought to stimulate
they ought to stimulate 	I ought to be stimulating
you ought to be stimulating
she ought to be stimulating
we ought to be stimulating
you ought to be stimulating
they ought to be stimulating	I ought to have stimulated
you ought to have stimulated
she ought to have stimulated
we ought to have stimulated
you ought to have stimulated
they ought to have stimulated	I ought to have been stimulating
you ought to have been stimulating
she ought to have been stimulating
we ought to have been stimulating
you ought to have been stimulating
they ought to have been stimulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to stimulate
you oughtn't to stimulate
she oughtn't to stimulate
we oughtn't to stimulate
you oughtn't to stimulate
they oughtn't to stimulate 	I oughtn't to be stimulating
you oughtn't to be stimulating
she oughtn't to be stimulating
we oughtn't to be stimulating
you oughtn't to be stimulating
they oughtn't to be stimulating	I oughtn't to have stimulated
you oughtn't to have stimulated
she oughtn't to have stimulated
we oughtn't to have stimulated
you oughtn't to have stimulated
they oughtn't to have stimulated	I oughtn't to have been stimulating
you oughtn't to have been stimulating
she oughtn't to have been stimulating
we oughtn't to have been stimulating
you oughtn't to have been stimulating
they oughtn't to have been stimulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I stimulate?
ought to you stimulate?
ought to she stimulate?
ought to we stimulate?
ought to you stimulate?
ought to they stimulate? 	ought to I be stimulating?
ought to you be stimulating?
ought to she be stimulating?
ought to we be stimulating?
ought to you be stimulating?
ought to they be stimulating? 	ought to I have stimulated?
ought to you have stimulated?
ought to she have stimulated?
ought to we have stimulated?
ought to you have stimulated?
ought to they have stimulated? 	ought to I have been stimulating?
ought to you have been stimulating?
ought to she have been stimulating?
ought to we have been stimulating?
ought to you have been stimulating?
ought to they have been stimulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to stimulate?
oughtn't you to stimulate?
oughtn't she to stimulate?
oughtn't we to stimulate?
oughtn't you to stimulate?
oughtn't they to stimulate? 	oughtn't I to be stimulating?
oughtn't you to be stimulating?
oughtn't she to be stimulating?
oughtn't we to be stimulating?
oughtn't you to be stimulating?
oughtn't they to be stimulating? 	oughtn't I to have stimulated?
oughtn't you to have stimulated?
oughtn't she to have stimulated?
oughtn't we to have stimulated?
oughtn't you to have stimulated?
oughtn't they to have stimulated? 	oughtn't I to have been stimulating?
oughtn't you to have been stimulating?
oughtn't she to have been stimulating?
oughtn't we to have been stimulating?
oughtn't you to have been stimulating?
oughtn't they to have been stimulating?