English verb conjugation
OUGHT TO THICKEN

Regular verb: thicken - thickened - thickened

Affirmation

Simple form	V-ing form
I ought to thicken you ought to thicken she ought to thicken we ought to thicken you ought to thicken they ought to thicken	I ought to be thickening you ought to be thickening she ought to be thickening we ought to be thickening you ought to be thickening they ought to be thickening
Perfect	V-ing perfect
I ought to have thickened you ought to have thickened she ought to have thickened we ought to have thickened you ought to have thickened they ought to have thickened	I ought to have been thickening you ought to have been thickening she ought to have been thickening we ought to have been thickening you ought to have been thickening they ought to have been thickening

Negation

Simple form	V-ing form
I oughtn't to thicken you oughtn't to thicken she oughtn't to thicken we oughtn't to thicken you oughtn't to thicken they oughtn't to thicken	I oughtn't to be thickening you oughtn't to be thickening she oughtn't to be thickening we oughtn't to be thickening you oughtn't to be thickening they oughtn't to be thickening
Perfect	V-ing perfect
I oughtn't to have thickened you oughtn't to have thickened she oughtn't to have thickened we oughtn't to have thickened you oughtn't to have thickened they oughtn't to have thickened	I oughtn't to have been thickening you oughtn't to have been thickening she oughtn't to have been thickening we oughtn't to have been thickening you oughtn't to have been thickening they oughtn't to have been thickening

Interrogative form

Simple form	V-ing form
ought to I thicken? ought to you thicken? ought to she thicken? ought to we thicken? ought to you thicken? ought to they thicken?	ought to I be thickening? ought to you be thickening? ought to she be thickening? ought to we be thickening? ought to you be thickening? ought to they be thickening?
Perfect	V-ing perfect
ought to I have thickened? ought to you have thickened? ought to she have thickened? ought to we have thickened? ought to you have thickened? ought to they have thickened?	ought to I have been thickening? ought to you have been thickening? ought to she have been thickening? ought to we have been thickening? ought to you have been thickening? ought to they have been thickening?

Interro-negative form

Simple form	V-ing form
oughtn't I to thicken? oughtn't you to thicken? oughtn't she to thicken? oughtn't we to thicken? oughtn't you to thicken? oughtn't they to thicken?	oughtn't I to be thickening? oughtn't you to be thickening? oughtn't she to be thickening? oughtn't we to be thickening? oughtn't you to be thickening? oughtn't they to be thickening?
Perfect	V-ing perfect
oughtn't I to have thickened? oughtn't you to have thickened? oughtn't she to have thickened? oughtn't we to have thickened? oughtn't you to have thickened? oughtn't they to have thickened?	oughtn't I to have been thickening? oughtn't you to have been thickening? oughtn't she to have been thickening? oughtn't we to have been thickening? oughtn't you to have been thickening? oughtn't they to have been thickening?