English verb conjugation
CAN PRETREAT

Regular verb: pretreat - pretreated - pretreated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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