English verb conjugation
OUGHT TO UNTHREAD

Regular verb: unthread - unthreaded - unthreaded

Affirmation

Simple form	V-ing form
I ought to unthread you ought to unthread he ought to unthread we ought to unthread you ought to unthread they ought to unthread	I ought to be unthreading you ought to be unthreading he ought to be unthreading we ought to be unthreading you ought to be unthreading they ought to be unthreading
Perfect	V-ing perfect
I ought to have unthreaded you ought to have unthreaded he ought to have unthreaded we ought to have unthreaded you ought to have unthreaded they ought to have unthreaded	I ought to have been unthreading you ought to have been unthreading he ought to have been unthreading we ought to have been unthreading you ought to have been unthreading they ought to have been unthreading

Negation

Simple form	V-ing form
I oughtn't to unthread you oughtn't to unthread he oughtn't to unthread we oughtn't to unthread you oughtn't to unthread they oughtn't to unthread	I oughtn't to be unthreading you oughtn't to be unthreading he oughtn't to be unthreading we oughtn't to be unthreading you oughtn't to be unthreading they oughtn't to be unthreading
Perfect	V-ing perfect
I oughtn't to have unthreaded you oughtn't to have unthreaded he oughtn't to have unthreaded we oughtn't to have unthreaded you oughtn't to have unthreaded they oughtn't to have unthreaded	I oughtn't to have been unthreading you oughtn't to have been unthreading he oughtn't to have been unthreading we oughtn't to have been unthreading you oughtn't to have been unthreading they oughtn't to have been unthreading

Interrogative form

Simple form	V-ing form
ought to I unthread? ought to you unthread? ought to he unthread? ought to we unthread? ought to you unthread? ought to they unthread?	ought to I be unthreading? ought to you be unthreading? ought to he be unthreading? ought to we be unthreading? ought to you be unthreading? ought to they be unthreading?
Perfect	V-ing perfect
ought to I have unthreaded? ought to you have unthreaded? ought to he have unthreaded? ought to we have unthreaded? ought to you have unthreaded? ought to they have unthreaded?	ought to I have been unthreading? ought to you have been unthreading? ought to he have been unthreading? ought to we have been unthreading? ought to you have been unthreading? ought to they have been unthreading?

Interro-negative form

Simple form	V-ing form
oughtn't I to unthread? oughtn't you to unthread? oughtn't he to unthread? oughtn't we to unthread? oughtn't you to unthread? oughtn't they to unthread?	oughtn't I to be unthreading? oughtn't you to be unthreading? oughtn't he to be unthreading? oughtn't we to be unthreading? oughtn't you to be unthreading? oughtn't they to be unthreading?
Perfect	V-ing perfect
oughtn't I to have unthreaded? oughtn't you to have unthreaded? oughtn't he to have unthreaded? oughtn't we to have unthreaded? oughtn't you to have unthreaded? oughtn't they to have unthreaded?	oughtn't I to have been unthreading? oughtn't you to have been unthreading? oughtn't he to have been unthreading? oughtn't we to have been unthreading? oughtn't you to have been unthreading? oughtn't they to have been unthreading?