English verb conjugation
OUGHT TO CERTIFICATE

Regular verb: certificate - certificated - certificated

Affirmation

Simple form	V-ing form
I ought to certificate you ought to certificate he ought to certificate we ought to certificate you ought to certificate they ought to certificate	I ought to be certificating you ought to be certificating he ought to be certificating we ought to be certificating you ought to be certificating they ought to be certificating
Perfect	V-ing perfect
I ought to have certificated you ought to have certificated he ought to have certificated we ought to have certificated you ought to have certificated they ought to have certificated	I ought to have been certificating you ought to have been certificating he ought to have been certificating we ought to have been certificating you ought to have been certificating they ought to have been certificating

Negation

Simple form	V-ing form
I oughtn't to certificate you oughtn't to certificate he oughtn't to certificate we oughtn't to certificate you oughtn't to certificate they oughtn't to certificate	I oughtn't to be certificating you oughtn't to be certificating he oughtn't to be certificating we oughtn't to be certificating you oughtn't to be certificating they oughtn't to be certificating
Perfect	V-ing perfect
I oughtn't to have certificated you oughtn't to have certificated he oughtn't to have certificated we oughtn't to have certificated you oughtn't to have certificated they oughtn't to have certificated	I oughtn't to have been certificating you oughtn't to have been certificating he oughtn't to have been certificating we oughtn't to have been certificating you oughtn't to have been certificating they oughtn't to have been certificating

Interrogative form

Simple form	V-ing form
ought to I certificate? ought to you certificate? ought to he certificate? ought to we certificate? ought to you certificate? ought to they certificate?	ought to I be certificating? ought to you be certificating? ought to he be certificating? ought to we be certificating? ought to you be certificating? ought to they be certificating?
Perfect	V-ing perfect
ought to I have certificated? ought to you have certificated? ought to he have certificated? ought to we have certificated? ought to you have certificated? ought to they have certificated?	ought to I have been certificating? ought to you have been certificating? ought to he have been certificating? ought to we have been certificating? ought to you have been certificating? ought to they have been certificating?

Interro-negative form

Simple form	V-ing form
oughtn't I to certificate? oughtn't you to certificate? oughtn't he to certificate? oughtn't we to certificate? oughtn't you to certificate? oughtn't they to certificate?	oughtn't I to be certificating? oughtn't you to be certificating? oughtn't he to be certificating? oughtn't we to be certificating? oughtn't you to be certificating? oughtn't they to be certificating?
Perfect	V-ing perfect
oughtn't I to have certificated? oughtn't you to have certificated? oughtn't he to have certificated? oughtn't we to have certificated? oughtn't you to have certificated? oughtn't they to have certificated?	oughtn't I to have been certificating? oughtn't you to have been certificating? oughtn't he to have been certificating? oughtn't we to have been certificating? oughtn't you to have been certificating? oughtn't they to have been certificating?