ought to illustrate
Regular verb: illustrate - illustrated- illustrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to illustrate
you ought to illustrate
he ought to illustrate
we ought to illustrate
you ought to illustrate
they ought to illustrate 	I ought to be illustrating
you ought to be illustrating
he ought to be illustrating
we ought to be illustrating
you ought to be illustrating
they ought to be illustrating	I ought to have illustrated
you ought to have illustrated
he ought to have illustrated
we ought to have illustrated
you ought to have illustrated
they ought to have illustrated	I ought to have been illustrating
you ought to have been illustrating
he ought to have been illustrating
we ought to have been illustrating
you ought to have been illustrating
they ought to have been illustrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to illustrate
you oughtn't to illustrate
he oughtn't to illustrate
we oughtn't to illustrate
you oughtn't to illustrate
they oughtn't to illustrate 	I oughtn't to be illustrating
you oughtn't to be illustrating
he oughtn't to be illustrating
we oughtn't to be illustrating
you oughtn't to be illustrating
they oughtn't to be illustrating	I oughtn't to have illustrated
you oughtn't to have illustrated
he oughtn't to have illustrated
we oughtn't to have illustrated
you oughtn't to have illustrated
they oughtn't to have illustrated	I oughtn't to have been illustrating
you oughtn't to have been illustrating
he oughtn't to have been illustrating
we oughtn't to have been illustrating
you oughtn't to have been illustrating
they oughtn't to have been illustrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I illustrate?
ought to you illustrate?
ought to he illustrate?
ought to we illustrate?
ought to you illustrate?
ought to they illustrate? 	ought to I be illustrating?
ought to you be illustrating?
ought to he be illustrating?
ought to we be illustrating?
ought to you be illustrating?
ought to they be illustrating? 	ought to I have illustrated?
ought to you have illustrated?
ought to he have illustrated?
ought to we have illustrated?
ought to you have illustrated?
ought to they have illustrated? 	ought to I have been illustrating?
ought to you have been illustrating?
ought to he have been illustrating?
ought to we have been illustrating?
ought to you have been illustrating?
ought to they have been illustrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to illustrate?
oughtn't you to illustrate?
oughtn't he to illustrate?
oughtn't we to illustrate?
oughtn't you to illustrate?
oughtn't they to illustrate? 	oughtn't I to be illustrating?
oughtn't you to be illustrating?
oughtn't he to be illustrating?
oughtn't we to be illustrating?
oughtn't you to be illustrating?
oughtn't they to be illustrating? 	oughtn't I to have illustrated?
oughtn't you to have illustrated?
oughtn't he to have illustrated?
oughtn't we to have illustrated?
oughtn't you to have illustrated?
oughtn't they to have illustrated? 	oughtn't I to have been illustrating?
oughtn't you to have been illustrating?
oughtn't he to have been illustrating?
oughtn't we to have been illustrating?
oughtn't you to have been illustrating?
oughtn't they to have been illustrating?