English verb conjugation
OUGHT TO UNBUTTON

Regular verb: unbutton - unbuttoned - unbuttoned

Affirmation

Simple form	V-ing form
I ought to unbutton you ought to unbutton he ought to unbutton we ought to unbutton you ought to unbutton they ought to unbutton	I ought to be unbuttoning you ought to be unbuttoning he ought to be unbuttoning we ought to be unbuttoning you ought to be unbuttoning they ought to be unbuttoning
Perfect	V-ing perfect
I ought to have unbuttoned you ought to have unbuttoned he ought to have unbuttoned we ought to have unbuttoned you ought to have unbuttoned they ought to have unbuttoned	I ought to have been unbuttoning you ought to have been unbuttoning he ought to have been unbuttoning we ought to have been unbuttoning you ought to have been unbuttoning they ought to have been unbuttoning

Negation

Simple form	V-ing form
I oughtn't to unbutton you oughtn't to unbutton he oughtn't to unbutton we oughtn't to unbutton you oughtn't to unbutton they oughtn't to unbutton	I oughtn't to be unbuttoning you oughtn't to be unbuttoning he oughtn't to be unbuttoning we oughtn't to be unbuttoning you oughtn't to be unbuttoning they oughtn't to be unbuttoning
Perfect	V-ing perfect
I oughtn't to have unbuttoned you oughtn't to have unbuttoned he oughtn't to have unbuttoned we oughtn't to have unbuttoned you oughtn't to have unbuttoned they oughtn't to have unbuttoned	I oughtn't to have been unbuttoning you oughtn't to have been unbuttoning he oughtn't to have been unbuttoning we oughtn't to have been unbuttoning you oughtn't to have been unbuttoning they oughtn't to have been unbuttoning

Interrogative form

Simple form	V-ing form
ought to I unbutton? ought to you unbutton? ought to he unbutton? ought to we unbutton? ought to you unbutton? ought to they unbutton?	ought to I be unbuttoning? ought to you be unbuttoning? ought to he be unbuttoning? ought to we be unbuttoning? ought to you be unbuttoning? ought to they be unbuttoning?
Perfect	V-ing perfect
ought to I have unbuttoned? ought to you have unbuttoned? ought to he have unbuttoned? ought to we have unbuttoned? ought to you have unbuttoned? ought to they have unbuttoned?	ought to I have been unbuttoning? ought to you have been unbuttoning? ought to he have been unbuttoning? ought to we have been unbuttoning? ought to you have been unbuttoning? ought to they have been unbuttoning?

Interro-negative form

Simple form	V-ing form
oughtn't I to unbutton? oughtn't you to unbutton? oughtn't he to unbutton? oughtn't we to unbutton? oughtn't you to unbutton? oughtn't they to unbutton?	oughtn't I to be unbuttoning? oughtn't you to be unbuttoning? oughtn't he to be unbuttoning? oughtn't we to be unbuttoning? oughtn't you to be unbuttoning? oughtn't they to be unbuttoning?
Perfect	V-ing perfect
oughtn't I to have unbuttoned? oughtn't you to have unbuttoned? oughtn't he to have unbuttoned? oughtn't we to have unbuttoned? oughtn't you to have unbuttoned? oughtn't they to have unbuttoned?	oughtn't I to have been unbuttoning? oughtn't you to have been unbuttoning? oughtn't he to have been unbuttoning? oughtn't we to have been unbuttoning? oughtn't you to have been unbuttoning? oughtn't they to have been unbuttoning?