English verb conjugation
MUST PRETREAT

Regular verb: pretreat - pretreated - pretreated

Affirmation

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

Negation

Simple form	V-ing form
I must not pretreat you must not pretreat he must not pretreat we must not pretreat you must not pretreat they must not pretreat	I must not be pretreating you must not be pretreating he must not be pretreating we must not be pretreating you must not be pretreating they must not be pretreating
Perfect	V-ing perfect
I must not have pretreated you must not have pretreated he must not have pretreated we must not have pretreated you must not have pretreated they must not have pretreated	I must not have been pretreating you must not have been pretreating he must not have been pretreating we must not have been pretreating you must not have been pretreating they must not have been pretreating

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not pretreat? must you not pretreat? must he not pretreat? must we not pretreat? must you not pretreat? must they not pretreat?	must I not be pretreating? must you not be pretreating? must he not be pretreating? must we not be pretreating? must you not be pretreating? must they not be pretreating?
Perfect	V-ing perfect
must I not have pretreated? must you not have pretreated? must he not have pretreated? must we not have pretreated? must you not have pretreated? must they not have pretreated?	must I not have been pretreating? must you not have been pretreating? must he not have been pretreating? must we not have been pretreating? must you not have been pretreating? must they not have been pretreating?