English verb conjugation COULD BUFF

Regular verb: buff - buffed - buffed

Affirmation

Simple form

I could buff
you could buff
he could buff
we could buff
you could buff
they could buff

V-ing form

I could be buffing
you could be buffing
he could be buffing
we could be buffing
you could be buffing
they could be buffing

Perfect

I could have buffed
you could have buffed
he could have buffed
we could have buffed
you could have buffed
they could have buffed

V-ing perfect

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

Negation

Simple form

I could not buff
you could not buff
he could not buff
we could not buff
you could not buff
they could not buff

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I buff?
could you buff?
could he buff?
could we buff?
could you buff?
could they buff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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