English verb conjugation COULD SUBTRACT

Regular verb: subtract - subtracted - subtracted

Affirmation

Simple form

I could subtract
you could subtract
he could subtract
we could subtract
you could subtract
they could subtract

V-ing form

I could be subtracting
you could be subtracting
he could be subtracting
we could be subtracting
you could be subtracting
they could be subtracting

Perfect

I could have subtracted
you could have subtracted
he could have subtracted
we could have subtracted
you could have subtracted
they could have subtracted

V-ing perfect

I could have been subtracting
you could have been subtracting
he could have been subtracting
we could have been subtracting
you could have been subtracting
they could have been subtracting

Negation

Simple form

I could not subtract
you could not subtract
he could not subtract
we could not subtract
you could not subtract
they could not subtract

V-ing form

I could not be subtracting
you could not be subtracting
he could not be subtracting
we could not be subtracting
you could not be subtracting
they could not be subtracting

Perfect

I could not have subtracted
you could not have subtracted
he could not have subtracted
we could not have subtracted
you could not have subtracted
they could not have subtracted

V-ing perfect

I could not have been subtracting
you could not have been subtracting
he could not have been subtracting
we could not have been subtracting
you could not have been subtracting
they could not have been subtracting

Interrogative form

Simple form

could I subtract?
could you subtract?
could he subtract?
could we subtract?
could you subtract?
could they subtract?

V-ing form

could I be subtracting?
could you be subtracting?
could he be subtracting?
could we be subtracting?
could you be subtracting?
could they be subtracting?

Perfect

could I have subtracted?
could you have subtracted?
could he have subtracted?
could we have subtracted?
could you have subtracted?
could they have subtracted?

V-ing perfect

could I have been subtracting?
could you have been subtracting?
could he have been subtracting?
could we have been subtracting?
could you have been subtracting?
could they have been subtracting?

Interro-negative form

Simple form

could I not subtract?
could you not subtract?
could he not subtract?
could we not subtract?
could you not subtract?
could they not subtract?

V-ing form

could I not be subtracting?
could you not be subtracting?
could he not be subtracting?
could we not be subtracting?
could you not be subtracting?
could they not be subtracting?

Perfect

could I not have subtracted?
could you not have subtracted?
could he not have subtracted?
could we not have subtracted?
could you not have subtracted?
could they not have subtracted?

V-ing perfect

could I not have been subtracting?
could you not have been subtracting?
could he not have been subtracting?
could we not have been subtracting?
could you not have been subtracting?
could they not have been subtracting?

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