English verb conjugation
OUGHT TO DESTABILISE

Regular verb: destabilise - destabilised - destabilised

Affirmation

Simple form	V-ing form
I ought to destabilise you ought to destabilise she ought to destabilise we ought to destabilise you ought to destabilise they ought to destabilise	I ought to be destabilising you ought to be destabilising she ought to be destabilising we ought to be destabilising you ought to be destabilising they ought to be destabilising
Perfect	V-ing perfect
I ought to have destabilised you ought to have destabilised she ought to have destabilised we ought to have destabilised you ought to have destabilised they ought to have destabilised	I ought to have been destabilising you ought to have been destabilising she ought to have been destabilising we ought to have been destabilising you ought to have been destabilising they ought to have been destabilising

Negation

Simple form	V-ing form
I oughtn't to destabilise you oughtn't to destabilise she oughtn't to destabilise we oughtn't to destabilise you oughtn't to destabilise they oughtn't to destabilise	I oughtn't to be destabilising you oughtn't to be destabilising she oughtn't to be destabilising we oughtn't to be destabilising you oughtn't to be destabilising they oughtn't to be destabilising
Perfect	V-ing perfect
I oughtn't to have destabilised you oughtn't to have destabilised she oughtn't to have destabilised we oughtn't to have destabilised you oughtn't to have destabilised they oughtn't to have destabilised	I oughtn't to have been destabilising you oughtn't to have been destabilising she oughtn't to have been destabilising we oughtn't to have been destabilising you oughtn't to have been destabilising they oughtn't to have been destabilising

Interrogative form

Simple form	V-ing form
ought to I destabilise? ought to you destabilise? ought to she destabilise? ought to we destabilise? ought to you destabilise? ought to they destabilise?	ought to I be destabilising? ought to you be destabilising? ought to she be destabilising? ought to we be destabilising? ought to you be destabilising? ought to they be destabilising?
Perfect	V-ing perfect
ought to I have destabilised? ought to you have destabilised? ought to she have destabilised? ought to we have destabilised? ought to you have destabilised? ought to they have destabilised?	ought to I have been destabilising? ought to you have been destabilising? ought to she have been destabilising? ought to we have been destabilising? ought to you have been destabilising? ought to they have been destabilising?

Interro-negative form

Simple form	V-ing form
oughtn't I to destabilise? oughtn't you to destabilise? oughtn't she to destabilise? oughtn't we to destabilise? oughtn't you to destabilise? oughtn't they to destabilise?	oughtn't I to be destabilising? oughtn't you to be destabilising? oughtn't she to be destabilising? oughtn't we to be destabilising? oughtn't you to be destabilising? oughtn't they to be destabilising?
Perfect	V-ing perfect
oughtn't I to have destabilised? oughtn't you to have destabilised? oughtn't she to have destabilised? oughtn't we to have destabilised? oughtn't you to have destabilised? oughtn't they to have destabilised?	oughtn't I to have been destabilising? oughtn't you to have been destabilising? oughtn't she to have been destabilising? oughtn't we to have been destabilising? oughtn't you to have been destabilising? oughtn't they to have been destabilising?