English verb conjugation
OUGHT TO PI

Regular verb: pi - pied - pied

Affirmation

Simple form	V-ing form
I ought to pi you ought to pi she ought to pi we ought to pi you ought to pi they ought to pi	I ought to be piing you ought to be piing she ought to be piing we ought to be piing you ought to be piing they ought to be piing
Perfect	V-ing perfect
I ought to have pied you ought to have pied she ought to have pied we ought to have pied you ought to have pied they ought to have pied	I ought to have been piing you ought to have been piing she ought to have been piing we ought to have been piing you ought to have been piing they ought to have been piing

Negation

Simple form	V-ing form
I oughtn't to pi you oughtn't to pi she oughtn't to pi we oughtn't to pi you oughtn't to pi they oughtn't to pi	I oughtn't to be piing you oughtn't to be piing she oughtn't to be piing we oughtn't to be piing you oughtn't to be piing they oughtn't to be piing
Perfect	V-ing perfect
I oughtn't to have pied you oughtn't to have pied she oughtn't to have pied we oughtn't to have pied you oughtn't to have pied they oughtn't to have pied	I oughtn't to have been piing you oughtn't to have been piing she oughtn't to have been piing we oughtn't to have been piing you oughtn't to have been piing they oughtn't to have been piing

Interrogative form

Simple form	V-ing form
ought to I pi? ought to you pi? ought to she pi? ought to we pi? ought to you pi? ought to they pi?	ought to I be piing? ought to you be piing? ought to she be piing? ought to we be piing? ought to you be piing? ought to they be piing?
Perfect	V-ing perfect
ought to I have pied? ought to you have pied? ought to she have pied? ought to we have pied? ought to you have pied? ought to they have pied?	ought to I have been piing? ought to you have been piing? ought to she have been piing? ought to we have been piing? ought to you have been piing? ought to they have been piing?

Interro-negative form

Simple form	V-ing form
oughtn't I to pi? oughtn't you to pi? oughtn't she to pi? oughtn't we to pi? oughtn't you to pi? oughtn't they to pi?	oughtn't I to be piing? oughtn't you to be piing? oughtn't she to be piing? oughtn't we to be piing? oughtn't you to be piing? oughtn't they to be piing?
Perfect	V-ing perfect
oughtn't I to have pied? oughtn't you to have pied? oughtn't she to have pied? oughtn't we to have pied? oughtn't you to have pied? oughtn't they to have pied?	oughtn't I to have been piing? oughtn't you to have been piing? oughtn't she to have been piing? oughtn't we to have been piing? oughtn't you to have been piing? oughtn't they to have been piing?