English verb conjugation
OUGHT TO ZIPPER

Regular verb: zipper - zippered - zippered

Affirmation

Simple form	V-ing form
I ought to zipper you ought to zipper she ought to zipper we ought to zipper you ought to zipper they ought to zipper	I ought to be zippering you ought to be zippering she ought to be zippering we ought to be zippering you ought to be zippering they ought to be zippering
Perfect	V-ing perfect
I ought to have zippered you ought to have zippered she ought to have zippered we ought to have zippered you ought to have zippered they ought to have zippered	I ought to have been zippering you ought to have been zippering she ought to have been zippering we ought to have been zippering you ought to have been zippering they ought to have been zippering

Negation

Simple form	V-ing form
I oughtn't to zipper you oughtn't to zipper she oughtn't to zipper we oughtn't to zipper you oughtn't to zipper they oughtn't to zipper	I oughtn't to be zippering you oughtn't to be zippering she oughtn't to be zippering we oughtn't to be zippering you oughtn't to be zippering they oughtn't to be zippering
Perfect	V-ing perfect
I oughtn't to have zippered you oughtn't to have zippered she oughtn't to have zippered we oughtn't to have zippered you oughtn't to have zippered they oughtn't to have zippered	I oughtn't to have been zippering you oughtn't to have been zippering she oughtn't to have been zippering we oughtn't to have been zippering you oughtn't to have been zippering they oughtn't to have been zippering

Interrogative form

Simple form	V-ing form
ought to I zipper? ought to you zipper? ought to she zipper? ought to we zipper? ought to you zipper? ought to they zipper?	ought to I be zippering? ought to you be zippering? ought to she be zippering? ought to we be zippering? ought to you be zippering? ought to they be zippering?
Perfect	V-ing perfect
ought to I have zippered? ought to you have zippered? ought to she have zippered? ought to we have zippered? ought to you have zippered? ought to they have zippered?	ought to I have been zippering? ought to you have been zippering? ought to she have been zippering? ought to we have been zippering? ought to you have been zippering? ought to they have been zippering?

Interro-negative form

Simple form	V-ing form
oughtn't I to zipper? oughtn't you to zipper? oughtn't she to zipper? oughtn't we to zipper? oughtn't you to zipper? oughtn't they to zipper?	oughtn't I to be zippering? oughtn't you to be zippering? oughtn't she to be zippering? oughtn't we to be zippering? oughtn't you to be zippering? oughtn't they to be zippering?
Perfect	V-ing perfect
oughtn't I to have zippered? oughtn't you to have zippered? oughtn't she to have zippered? oughtn't we to have zippered? oughtn't you to have zippered? oughtn't they to have zippered?	oughtn't I to have been zippering? oughtn't you to have been zippering? oughtn't she to have been zippering? oughtn't we to have been zippering? oughtn't you to have been zippering? oughtn't they to have been zippering?