English verb conjugation
OUGHT TO TOUGHEN

Regular verb: toughen - toughened - toughened

Affirmation

Simple form	V-ing form
I ought to toughen you ought to toughen she ought to toughen we ought to toughen you ought to toughen they ought to toughen	I ought to be toughening you ought to be toughening she ought to be toughening we ought to be toughening you ought to be toughening they ought to be toughening
Perfect	V-ing perfect
I ought to have toughened you ought to have toughened she ought to have toughened we ought to have toughened you ought to have toughened they ought to have toughened	I ought to have been toughening you ought to have been toughening she ought to have been toughening we ought to have been toughening you ought to have been toughening they ought to have been toughening

Negation

Simple form	V-ing form
I oughtn't to toughen you oughtn't to toughen she oughtn't to toughen we oughtn't to toughen you oughtn't to toughen they oughtn't to toughen	I oughtn't to be toughening you oughtn't to be toughening she oughtn't to be toughening we oughtn't to be toughening you oughtn't to be toughening they oughtn't to be toughening
Perfect	V-ing perfect
I oughtn't to have toughened you oughtn't to have toughened she oughtn't to have toughened we oughtn't to have toughened you oughtn't to have toughened they oughtn't to have toughened	I oughtn't to have been toughening you oughtn't to have been toughening she oughtn't to have been toughening we oughtn't to have been toughening you oughtn't to have been toughening they oughtn't to have been toughening

Interrogative form

Simple form	V-ing form
ought to I toughen? ought to you toughen? ought to she toughen? ought to we toughen? ought to you toughen? ought to they toughen?	ought to I be toughening? ought to you be toughening? ought to she be toughening? ought to we be toughening? ought to you be toughening? ought to they be toughening?
Perfect	V-ing perfect
ought to I have toughened? ought to you have toughened? ought to she have toughened? ought to we have toughened? ought to you have toughened? ought to they have toughened?	ought to I have been toughening? ought to you have been toughening? ought to she have been toughening? ought to we have been toughening? ought to you have been toughening? ought to they have been toughening?

Interro-negative form

Simple form	V-ing form
oughtn't I to toughen? oughtn't you to toughen? oughtn't she to toughen? oughtn't we to toughen? oughtn't you to toughen? oughtn't they to toughen?	oughtn't I to be toughening? oughtn't you to be toughening? oughtn't she to be toughening? oughtn't we to be toughening? oughtn't you to be toughening? oughtn't they to be toughening?
Perfect	V-ing perfect
oughtn't I to have toughened? oughtn't you to have toughened? oughtn't she to have toughened? oughtn't we to have toughened? oughtn't you to have toughened? oughtn't they to have toughened?	oughtn't I to have been toughening? oughtn't you to have been toughening? oughtn't she to have been toughening? oughtn't we to have been toughening? oughtn't you to have been toughening? oughtn't they to have been toughening?