English verb conjugation
OUGHT TO SMOOTHEN

Regular verb: smoothen - smoothened - smoothened

Affirmation

Simple form	V-ing form
I ought to smoothen you ought to smoothen she ought to smoothen we ought to smoothen you ought to smoothen they ought to smoothen	I ought to be smoothening you ought to be smoothening she ought to be smoothening we ought to be smoothening you ought to be smoothening they ought to be smoothening
Perfect	V-ing perfect
I ought to have smoothened you ought to have smoothened she ought to have smoothened we ought to have smoothened you ought to have smoothened they ought to have smoothened	I ought to have been smoothening you ought to have been smoothening she ought to have been smoothening we ought to have been smoothening you ought to have been smoothening they ought to have been smoothening

Negation

Simple form	V-ing form
I oughtn't to smoothen you oughtn't to smoothen she oughtn't to smoothen we oughtn't to smoothen you oughtn't to smoothen they oughtn't to smoothen	I oughtn't to be smoothening you oughtn't to be smoothening she oughtn't to be smoothening we oughtn't to be smoothening you oughtn't to be smoothening they oughtn't to be smoothening
Perfect	V-ing perfect
I oughtn't to have smoothened you oughtn't to have smoothened she oughtn't to have smoothened we oughtn't to have smoothened you oughtn't to have smoothened they oughtn't to have smoothened	I oughtn't to have been smoothening you oughtn't to have been smoothening she oughtn't to have been smoothening we oughtn't to have been smoothening you oughtn't to have been smoothening they oughtn't to have been smoothening

Interrogative form

Simple form	V-ing form
ought to I smoothen? ought to you smoothen? ought to she smoothen? ought to we smoothen? ought to you smoothen? ought to they smoothen?	ought to I be smoothening? ought to you be smoothening? ought to she be smoothening? ought to we be smoothening? ought to you be smoothening? ought to they be smoothening?
Perfect	V-ing perfect
ought to I have smoothened? ought to you have smoothened? ought to she have smoothened? ought to we have smoothened? ought to you have smoothened? ought to they have smoothened?	ought to I have been smoothening? ought to you have been smoothening? ought to she have been smoothening? ought to we have been smoothening? ought to you have been smoothening? ought to they have been smoothening?

Interro-negative form

Simple form	V-ing form
oughtn't I to smoothen? oughtn't you to smoothen? oughtn't she to smoothen? oughtn't we to smoothen? oughtn't you to smoothen? oughtn't they to smoothen?	oughtn't I to be smoothening? oughtn't you to be smoothening? oughtn't she to be smoothening? oughtn't we to be smoothening? oughtn't you to be smoothening? oughtn't they to be smoothening?
Perfect	V-ing perfect
oughtn't I to have smoothened? oughtn't you to have smoothened? oughtn't she to have smoothened? oughtn't we to have smoothened? oughtn't you to have smoothened? oughtn't they to have smoothened?	oughtn't I to have been smoothening? oughtn't you to have been smoothening? oughtn't she to have been smoothening? oughtn't we to have been smoothening? oughtn't you to have been smoothening? oughtn't they to have been smoothening?