English verb conjugation
OUGHT TO WHITEN

Regular verb: whiten - whitened - whitened

Affirmation

Simple form	V-ing form
I ought to whiten you ought to whiten she ought to whiten we ought to whiten you ought to whiten they ought to whiten	I ought to be whitening you ought to be whitening she ought to be whitening we ought to be whitening you ought to be whitening they ought to be whitening
Perfect	V-ing perfect
I ought to have whitened you ought to have whitened she ought to have whitened we ought to have whitened you ought to have whitened they ought to have whitened	I ought to have been whitening you ought to have been whitening she ought to have been whitening we ought to have been whitening you ought to have been whitening they ought to have been whitening

Negation

Simple form	V-ing form
I ought not to whiten you ought not to whiten she ought not to whiten we ought not to whiten you ought not to whiten they ought not to whiten	I ought not to whitening you ought not to whitening she ought not to whitening we ought not to whitening you ought not to whitening they ought not to whitening
Perfect	V-ing perfect
I ought not to have whitened you ought not to have whitened she ought not to have whitened we ought not to have whitened you ought not to have whitened they ought not to have whitened	I ought not to have been whitening you ought not to have been whitening she ought not to have been whitening we ought not to have been whitening you ought not to have been whitening they ought not to have been whitening

Interrogative form

Simple form	V-ing form
ought to I whiten? ought to you whiten? ought to she whiten? ought to we whiten? ought to you whiten? ought to they whiten?	ought to I be whitening? ought to you be whitening? ought to she be whitening? ought to we be whitening? ought to you be whitening? ought to they be whitening?
Perfect	V-ing perfect
ought to I have whitened? ought to you have whitened? ought to she have whitened? ought to we have whitened? ought to you have whitened? ought to they have whitened?	ought to I have been whitening? ought to you have been whitening? ought to she have been whitening? ought to we have been whitening? ought to you have been whitening? ought to they have been whitening?

Interro-negative form

Simple form	V-ing form
ought I not to whiten? ought you not to whiten? ought she not to whiten? ought we not to whiten? ought you not to whiten? ought they not to whiten?	ought I not to be whitening? ought you not to be whitening? ought she not to be whitening? ought we not to be whitening? ought you not to be whitening? ought they not to be whitening?
Perfect	V-ing perfect
ought I not to have whitened? ought you not to have whitened? ought she not to have whitened? ought we not to have whitened? ought you not to have whitened? ought they not to have whitened?	ought I not to have been whitening? ought you not to have been whitening? ought she not to have been whitening? ought we not to have been whitening? ought you not to have been whitening? ought they not to have been whitening?