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 can't pretreat you can't pretreat he can't pretreat we can't pretreat you can't pretreat they can't pretreat	I can't be pretreating you can't be pretreating he can't be pretreating we can't be pretreating you can't be pretreating they can't be pretreating
Perfect	V-ing perfect
I can't have pretreated you can't have pretreated he can't have pretreated we can't have pretreated you can't have pretreated they can't have pretreated	I can't have been pretreating you can't have been pretreating he can't have been pretreating we can't have been pretreating you can't have been pretreating they can't 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't I pretreat? can't you pretreat? can't he pretreat? can't we pretreat? can't you pretreat? can't they pretreat?	can't I be pretreating? can't you be pretreating? can't he be pretreating? can't we be pretreating? can't you be pretreating? can't they be pretreating?
Perfect	V-ing perfect
can't I have pretreated? can't you have pretreated? can't he have pretreated? can't we have pretreated? can't you have pretreated? can't they have pretreated?	can't I have been pretreating? can't you have been pretreating? can't he have been pretreating? can't we have been pretreating? can't you have been pretreating? can't they have been pretreating?