English verb conjugation
CAN SUBTRACT

Regular verb: subtract - subtracted - subtracted

Affirmation

Simple form	V-ing form
I can subtract you can subtract he can subtract we can subtract you can subtract they can subtract	I can be subtracting you can be subtracting he can be subtracting we can be subtracting you can be subtracting they can be subtracting
Perfect	V-ing perfect
I can have subtracted you can have subtracted he can have subtracted we can have subtracted you can have subtracted they can have subtracted	I can have been subtracting you can have been subtracting he can have been subtracting we can have been subtracting you can have been subtracting they can have been subtracting

Negation

Simple form	V-ing form
I cannot subtract you cannot subtract he cannot subtract we cannot subtract you cannot subtract they cannot subtract	I cannot be subtracting you cannot be subtracting he cannot be subtracting we cannot be subtracting you cannot be subtracting they cannot be subtracting
Perfect	V-ing perfect
I cannot have subtracted you cannot have subtracted he cannot have subtracted we cannot have subtracted you cannot have subtracted they cannot have subtracted	I cannot have been subtracting you cannot have been subtracting he cannot have been subtracting we cannot have been subtracting you cannot have been subtracting they cannot have been subtracting

Interrogative form

Simple form	V-ing form
can I subtract? can you subtract? can he subtract? can we subtract? can you subtract? can they subtract?	can I be subtracting? can you be subtracting? can he be subtracting? can we be subtracting? can you be subtracting? can they be subtracting?
Perfect	V-ing perfect
can I have subtracted? can you have subtracted? can he have subtracted? can we have subtracted? can you have subtracted? can they have subtracted?	can I have been subtracting? can you have been subtracting? can he have been subtracting? can we have been subtracting? can you have been subtracting? can they have been subtracting?

Interro-negative form

Simple form	V-ing form
can I not subtract? can you not subtract? can he not subtract? can we not subtract? can you not subtract? can they not subtract?	can I not be subtracting? can you not be subtracting? can he not be subtracting? can we not be subtracting? can you not be subtracting? can they not be subtracting?
Perfect	V-ing perfect
can I not have subtracted? can you not have subtracted? can he not have subtracted? can we not have subtracted? can you not have subtracted? can they not have subtracted?	can I not have been subtracting? can you not have been subtracting? can he not have been subtracting? can we not have been subtracting? can you not have been subtracting? can they not have been subtracting?