English verb conjugation
OUGHT TO ASSIST

Regular verb: assist - assisted - assisted

Affirmation

Simple form	V-ing form
I ought to assist you ought to assist she ought to assist we ought to assist you ought to assist they ought to assist	I ought to be assisting you ought to be assisting she ought to be assisting we ought to be assisting you ought to be assisting they ought to be assisting
Perfect	V-ing perfect
I ought to have assisted you ought to have assisted she ought to have assisted we ought to have assisted you ought to have assisted they ought to have assisted	I ought to have been assisting you ought to have been assisting she ought to have been assisting we ought to have been assisting you ought to have been assisting they ought to have been assisting

Negation

Simple form	V-ing form
I oughtn't to assist you oughtn't to assist she oughtn't to assist we oughtn't to assist you oughtn't to assist they oughtn't to assist	I oughtn't to be assisting you oughtn't to be assisting she oughtn't to be assisting we oughtn't to be assisting you oughtn't to be assisting they oughtn't to be assisting
Perfect	V-ing perfect
I oughtn't to have assisted you oughtn't to have assisted she oughtn't to have assisted we oughtn't to have assisted you oughtn't to have assisted they oughtn't to have assisted	I oughtn't to have been assisting you oughtn't to have been assisting she oughtn't to have been assisting we oughtn't to have been assisting you oughtn't to have been assisting they oughtn't to have been assisting

Interrogative form

Simple form	V-ing form
ought to I assist? ought to you assist? ought to she assist? ought to we assist? ought to you assist? ought to they assist?	ought to I be assisting? ought to you be assisting? ought to she be assisting? ought to we be assisting? ought to you be assisting? ought to they be assisting?
Perfect	V-ing perfect
ought to I have assisted? ought to you have assisted? ought to she have assisted? ought to we have assisted? ought to you have assisted? ought to they have assisted?	ought to I have been assisting? ought to you have been assisting? ought to she have been assisting? ought to we have been assisting? ought to you have been assisting? ought to they have been assisting?

Interro-negative form

Simple form	V-ing form
oughtn't I to assist? oughtn't you to assist? oughtn't she to assist? oughtn't we to assist? oughtn't you to assist? oughtn't they to assist?	oughtn't I to be assisting? oughtn't you to be assisting? oughtn't she to be assisting? oughtn't we to be assisting? oughtn't you to be assisting? oughtn't they to be assisting?
Perfect	V-ing perfect
oughtn't I to have assisted? oughtn't you to have assisted? oughtn't she to have assisted? oughtn't we to have assisted? oughtn't you to have assisted? oughtn't they to have assisted?	oughtn't I to have been assisting? oughtn't you to have been assisting? oughtn't she to have been assisting? oughtn't we to have been assisting? oughtn't you to have been assisting? oughtn't they to have been assisting?