English verb conjugation
OUGHT TO DESULFERISE

Regular verb: desulferise - desulferised - desulferised

Affirmation

Simple form	V-ing form
I ought to desulferise you ought to desulferise he ought to desulferise we ought to desulferise you ought to desulferise they ought to desulferise	I ought to be desulferising you ought to be desulferising he ought to be desulferising we ought to be desulferising you ought to be desulferising they ought to be desulferising
Perfect	V-ing perfect
I ought to have desulferised you ought to have desulferised he ought to have desulferised we ought to have desulferised you ought to have desulferised they ought to have desulferised	I ought to have been desulferising you ought to have been desulferising he ought to have been desulferising we ought to have been desulferising you ought to have been desulferising they ought to have been desulferising

Negation

Simple form	V-ing form
I oughtn't to desulferise you oughtn't to desulferise he oughtn't to desulferise we oughtn't to desulferise you oughtn't to desulferise they oughtn't to desulferise	I oughtn't to be desulferising you oughtn't to be desulferising he oughtn't to be desulferising we oughtn't to be desulferising you oughtn't to be desulferising they oughtn't to be desulferising
Perfect	V-ing perfect
I oughtn't to have desulferised you oughtn't to have desulferised he oughtn't to have desulferised we oughtn't to have desulferised you oughtn't to have desulferised they oughtn't to have desulferised	I oughtn't to have been desulferising you oughtn't to have been desulferising he oughtn't to have been desulferising we oughtn't to have been desulferising you oughtn't to have been desulferising they oughtn't to have been desulferising

Interrogative form

Simple form	V-ing form
ought to I desulferise? ought to you desulferise? ought to he desulferise? ought to we desulferise? ought to you desulferise? ought to they desulferise?	ought to I be desulferising? ought to you be desulferising? ought to he be desulferising? ought to we be desulferising? ought to you be desulferising? ought to they be desulferising?
Perfect	V-ing perfect
ought to I have desulferised? ought to you have desulferised? ought to he have desulferised? ought to we have desulferised? ought to you have desulferised? ought to they have desulferised?	ought to I have been desulferising? ought to you have been desulferising? ought to he have been desulferising? ought to we have been desulferising? ought to you have been desulferising? ought to they have been desulferising?

Interro-negative form

Simple form	V-ing form
oughtn't I to desulferise? oughtn't you to desulferise? oughtn't he to desulferise? oughtn't we to desulferise? oughtn't you to desulferise? oughtn't they to desulferise?	oughtn't I to be desulferising? oughtn't you to be desulferising? oughtn't he to be desulferising? oughtn't we to be desulferising? oughtn't you to be desulferising? oughtn't they to be desulferising?
Perfect	V-ing perfect
oughtn't I to have desulferised? oughtn't you to have desulferised? oughtn't he to have desulferised? oughtn't we to have desulferised? oughtn't you to have desulferised? oughtn't they to have desulferised?	oughtn't I to have been desulferising? oughtn't you to have been desulferising? oughtn't he to have been desulferising? oughtn't we to have been desulferising? oughtn't you to have been desulferising? oughtn't they to have been desulferising?