English verb conjugation
OUGHT TO GRIND

Irregular verb: grind - ground - ground

Affirmation

Simple form	V-ing form
I ought to grind you ought to grind he ought to grind we ought to grind you ought to grind they ought to grind	I ought to be grinding you ought to be grinding he ought to be grinding we ought to be grinding you ought to be grinding they ought to be grinding
Perfect	V-ing perfect
I ought to have ground you ought to have ground he ought to have ground we ought to have ground you ought to have ground they ought to have ground	I ought to have been grinding you ought to have been grinding he ought to have been grinding we ought to have been grinding you ought to have been grinding they ought to have been grinding

Negation

Simple form	V-ing form
I oughtn't to grind you oughtn't to grind he oughtn't to grind we oughtn't to grind you oughtn't to grind they oughtn't to grind	I oughtn't to be grinding you oughtn't to be grinding he oughtn't to be grinding we oughtn't to be grinding you oughtn't to be grinding they oughtn't to be grinding
Perfect	V-ing perfect
I oughtn't to have ground you oughtn't to have ground he oughtn't to have ground we oughtn't to have ground you oughtn't to have ground they oughtn't to have ground	I oughtn't to have been grinding you oughtn't to have been grinding he oughtn't to have been grinding we oughtn't to have been grinding you oughtn't to have been grinding they oughtn't to have been grinding

Interrogative form

Simple form	V-ing form
ought to I grind? ought to you grind? ought to he grind? ought to we grind? ought to you grind? ought to they grind?	ought to I be grinding? ought to you be grinding? ought to he be grinding? ought to we be grinding? ought to you be grinding? ought to they be grinding?
Perfect	V-ing perfect
ought to I have ground? ought to you have ground? ought to he have ground? ought to we have ground? ought to you have ground? ought to they have ground?	ought to I have been grinding? ought to you have been grinding? ought to he have been grinding? ought to we have been grinding? ought to you have been grinding? ought to they have been grinding?

Interro-negative form

Simple form	V-ing form
oughtn't I to grind? oughtn't you to grind? oughtn't he to grind? oughtn't we to grind? oughtn't you to grind? oughtn't they to grind?	oughtn't I to be grinding? oughtn't you to be grinding? oughtn't he to be grinding? oughtn't we to be grinding? oughtn't you to be grinding? oughtn't they to be grinding?
Perfect	V-ing perfect
oughtn't I to have ground? oughtn't you to have ground? oughtn't he to have ground? oughtn't we to have ground? oughtn't you to have ground? oughtn't they to have ground?	oughtn't I to have been grinding? oughtn't you to have been grinding? oughtn't he to have been grinding? oughtn't we to have been grinding? oughtn't you to have been grinding? oughtn't they to have been grinding?