English verb conjugation
OUGHT TO PURIFY

Regular verb: purify - purified - purified

Affirmation

Simple form	V-ing form
I ought to purify you ought to purify he ought to purify we ought to purify you ought to purify they ought to purify	I ought to be purifying you ought to be purifying he ought to be purifying we ought to be purifying you ought to be purifying they ought to be purifying
Perfect	V-ing perfect
I ought to have purified you ought to have purified he ought to have purified we ought to have purified you ought to have purified they ought to have purified	I ought to have been purifying you ought to have been purifying he ought to have been purifying we ought to have been purifying you ought to have been purifying they ought to have been purifying

Negation

Simple form	V-ing form
I oughtn't to purify you oughtn't to purify he oughtn't to purify we oughtn't to purify you oughtn't to purify they oughtn't to purify	I oughtn't to be purifying you oughtn't to be purifying he oughtn't to be purifying we oughtn't to be purifying you oughtn't to be purifying they oughtn't to be purifying
Perfect	V-ing perfect
I oughtn't to have purified you oughtn't to have purified he oughtn't to have purified we oughtn't to have purified you oughtn't to have purified they oughtn't to have purified	I oughtn't to have been purifying you oughtn't to have been purifying he oughtn't to have been purifying we oughtn't to have been purifying you oughtn't to have been purifying they oughtn't to have been purifying

Interrogative form

Simple form	V-ing form
ought to I purify? ought to you purify? ought to he purify? ought to we purify? ought to you purify? ought to they purify?	ought to I be purifying? ought to you be purifying? ought to he be purifying? ought to we be purifying? ought to you be purifying? ought to they be purifying?
Perfect	V-ing perfect
ought to I have purified? ought to you have purified? ought to he have purified? ought to we have purified? ought to you have purified? ought to they have purified?	ought to I have been purifying? ought to you have been purifying? ought to he have been purifying? ought to we have been purifying? ought to you have been purifying? ought to they have been purifying?

Interro-negative form

Simple form	V-ing form
oughtn't I to purify? oughtn't you to purify? oughtn't he to purify? oughtn't we to purify? oughtn't you to purify? oughtn't they to purify?	oughtn't I to be purifying? oughtn't you to be purifying? oughtn't he to be purifying? oughtn't we to be purifying? oughtn't you to be purifying? oughtn't they to be purifying?
Perfect	V-ing perfect
oughtn't I to have purified? oughtn't you to have purified? oughtn't he to have purified? oughtn't we to have purified? oughtn't you to have purified? oughtn't they to have purified?	oughtn't I to have been purifying? oughtn't you to have been purifying? oughtn't he to have been purifying? oughtn't we to have been purifying? oughtn't you to have been purifying? oughtn't they to have been purifying?