English verb conjugation
OUGHT TO PRETREAT

Regular verb: pretreat - pretreated - pretreated

Affirmation

Simple form	V-ing form
I ought to pretreat you ought to pretreat he ought to pretreat we ought to pretreat you ought to pretreat they ought to pretreat	I ought to be pretreating you ought to be pretreating he ought to be pretreating we ought to be pretreating you ought to be pretreating they ought to be pretreating
Perfect	V-ing perfect
I ought to have pretreated you ought to have pretreated he ought to have pretreated we ought to have pretreated you ought to have pretreated they ought to have pretreated	I ought to have been pretreating you ought to have been pretreating he ought to have been pretreating we ought to have been pretreating you ought to have been pretreating they ought to have been pretreating

Negation

Simple form	V-ing form
I oughtn't to pretreat you oughtn't to pretreat he oughtn't to pretreat we oughtn't to pretreat you oughtn't to pretreat they oughtn't to pretreat	I oughtn't to be pretreating you oughtn't to be pretreating he oughtn't to be pretreating we oughtn't to be pretreating you oughtn't to be pretreating they oughtn't to be pretreating
Perfect	V-ing perfect
I oughtn't to have pretreated you oughtn't to have pretreated he oughtn't to have pretreated we oughtn't to have pretreated you oughtn't to have pretreated they oughtn't to have pretreated	I oughtn't to have been pretreating you oughtn't to have been pretreating he oughtn't to have been pretreating we oughtn't to have been pretreating you oughtn't to have been pretreating they oughtn't to have been pretreating

Interrogative form

Simple form	V-ing form
ought to I pretreat? ought to you pretreat? ought to he pretreat? ought to we pretreat? ought to you pretreat? ought to they pretreat?	ought to I be pretreating? ought to you be pretreating? ought to he be pretreating? ought to we be pretreating? ought to you be pretreating? ought to they be pretreating?
Perfect	V-ing perfect
ought to I have pretreated? ought to you have pretreated? ought to he have pretreated? ought to we have pretreated? ought to you have pretreated? ought to they have pretreated?	ought to I have been pretreating? ought to you have been pretreating? ought to he have been pretreating? ought to we have been pretreating? ought to you have been pretreating? ought to they have been pretreating?

Interro-negative form

Simple form	V-ing form
oughtn't I to pretreat? oughtn't you to pretreat? oughtn't he to pretreat? oughtn't we to pretreat? oughtn't you to pretreat? oughtn't they to pretreat?	oughtn't I to be pretreating? oughtn't you to be pretreating? oughtn't he to be pretreating? oughtn't we to be pretreating? oughtn't you to be pretreating? oughtn't they to be pretreating?
Perfect	V-ing perfect
oughtn't I to have pretreated? oughtn't you to have pretreated? oughtn't he to have pretreated? oughtn't we to have pretreated? oughtn't you to have pretreated? oughtn't they to have pretreated?	oughtn't I to have been pretreating? oughtn't you to have been pretreating? oughtn't he to have been pretreating? oughtn't we to have been pretreating? oughtn't you to have been pretreating? oughtn't they to have been pretreating?