ought to fertilize
Regular verb: fertilize - fertilized- fertilized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to fertilize
you ought to fertilize
he ought to fertilize
we ought to fertilize
you ought to fertilize
they ought to fertilize 	I ought to be fertilizing
you ought to be fertilizing
he ought to be fertilizing
we ought to be fertilizing
you ought to be fertilizing
they ought to be fertilizing	I ought to have fertilized
you ought to have fertilized
he ought to have fertilized
we ought to have fertilized
you ought to have fertilized
they ought to have fertilized	I ought to have been fertilizing
you ought to have been fertilizing
he ought to have been fertilizing
we ought to have been fertilizing
you ought to have been fertilizing
they ought to have been fertilizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to fertilize
you oughtn't to fertilize
he oughtn't to fertilize
we oughtn't to fertilize
you oughtn't to fertilize
they oughtn't to fertilize 	I oughtn't to be fertilizing
you oughtn't to be fertilizing
he oughtn't to be fertilizing
we oughtn't to be fertilizing
you oughtn't to be fertilizing
they oughtn't to be fertilizing	I oughtn't to have fertilized
you oughtn't to have fertilized
he oughtn't to have fertilized
we oughtn't to have fertilized
you oughtn't to have fertilized
they oughtn't to have fertilized	I oughtn't to have been fertilizing
you oughtn't to have been fertilizing
he oughtn't to have been fertilizing
we oughtn't to have been fertilizing
you oughtn't to have been fertilizing
they oughtn't to have been fertilizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I fertilize?
ought to you fertilize?
ought to he fertilize?
ought to we fertilize?
ought to you fertilize?
ought to they fertilize? 	ought to I be fertilizing?
ought to you be fertilizing?
ought to he be fertilizing?
ought to we be fertilizing?
ought to you be fertilizing?
ought to they be fertilizing? 	ought to I have fertilized?
ought to you have fertilized?
ought to he have fertilized?
ought to we have fertilized?
ought to you have fertilized?
ought to they have fertilized? 	ought to I have been fertilizing?
ought to you have been fertilizing?
ought to he have been fertilizing?
ought to we have been fertilizing?
ought to you have been fertilizing?
ought to they have been fertilizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to fertilize?
oughtn't you to fertilize?
oughtn't he to fertilize?
oughtn't we to fertilize?
oughtn't you to fertilize?
oughtn't they to fertilize? 	oughtn't I to be fertilizing?
oughtn't you to be fertilizing?
oughtn't he to be fertilizing?
oughtn't we to be fertilizing?
oughtn't you to be fertilizing?
oughtn't they to be fertilizing? 	oughtn't I to have fertilized?
oughtn't you to have fertilized?
oughtn't he to have fertilized?
oughtn't we to have fertilized?
oughtn't you to have fertilized?
oughtn't they to have fertilized? 	oughtn't I to have been fertilizing?
oughtn't you to have been fertilizing?
oughtn't he to have been fertilizing?
oughtn't we to have been fertilizing?
oughtn't you to have been fertilizing?
oughtn't they to have been fertilizing?