English verb conjugation
CAN EXTRACT

Regular verb: extract - extracted - extracted

Affirmation

Simple form	V-ing form
I can extract you can extract he can extract we can extract you can extract they can extract	I can be extracting you can be extracting he can be extracting we can be extracting you can be extracting they can be extracting
Perfect	V-ing perfect
I can have extracted you can have extracted he can have extracted we can have extracted you can have extracted they can have extracted	I can have been extracting you can have been extracting he can have been extracting we can have been extracting you can have been extracting they can have been extracting

Negation

Simple form	V-ing form
I can't extract you can't extract he can't extract we can't extract you can't extract they can't extract	I can't be extracting you can't be extracting he can't be extracting we can't be extracting you can't be extracting they can't be extracting
Perfect	V-ing perfect
I can't have extracted you can't have extracted he can't have extracted we can't have extracted you can't have extracted they can't have extracted	I can't have been extracting you can't have been extracting he can't have been extracting we can't have been extracting you can't have been extracting they can't have been extracting

Interrogative form

Simple form	V-ing form
can I extract? can you extract? can he extract? can we extract? can you extract? can they extract?	can I be extracting? can you be extracting? can he be extracting? can we be extracting? can you be extracting? can they be extracting?
Perfect	V-ing perfect
can I have extracted? can you have extracted? can he have extracted? can we have extracted? can you have extracted? can they have extracted?	can I have been extracting? can you have been extracting? can he have been extracting? can we have been extracting? can you have been extracting? can they have been extracting?

Interro-negative form

Simple form	V-ing form
can't I extract? can't you extract? can't he extract? can't we extract? can't you extract? can't they extract?	can't I be extracting? can't you be extracting? can't he be extracting? can't we be extracting? can't you be extracting? can't they be extracting?
Perfect	V-ing perfect
can't I have extracted? can't you have extracted? can't he have extracted? can't we have extracted? can't you have extracted? can't they have extracted?	can't I have been extracting? can't you have been extracting? can't he have been extracting? can't we have been extracting? can't you have been extracting? can't they have been extracting?