English verb conjugation COULD RIB

Regular verb: rib - ribed - ribed

Affirmation

Simple form

I could rib
you could rib
she could rib
we could rib
you could rib
they could rib

V-ing form

I could be ribing
you could be ribing
she could be ribing
we could be ribing
you could be ribing
they could be ribing

Perfect

I could have ribed
you could have ribed
she could have ribed
we could have ribed
you could have ribed
they could have ribed

V-ing perfect

I could have been ribing
you could have been ribing
she could have been ribing
we could have been ribing
you could have been ribing
they could have been ribing

Negation

Simple form

I could not rib
you could not rib
she could not rib
we could not rib
you could not rib
they could not rib

V-ing form

I could not be ribing
you could not be ribing
she could not be ribing
we could not be ribing
you could not be ribing
they could not be ribing

Perfect

I could not have ribed
you could not have ribed
she could not have ribed
we could not have ribed
you could not have ribed
they could not have ribed

V-ing perfect

I could not have been ribing
you could not have been ribing
she could not have been ribing
we could not have been ribing
you could not have been ribing
they could not have been ribing

Interrogative form

Simple form

could I rib?
could you rib?
could she rib?
could we rib?
could you rib?
could they rib?

V-ing form

could I be ribing?
could you be ribing?
could she be ribing?
could we be ribing?
could you be ribing?
could they be ribing?

Perfect

could I have ribed?
could you have ribed?
could she have ribed?
could we have ribed?
could you have ribed?
could they have ribed?

V-ing perfect

could I have been ribing?
could you have been ribing?
could she have been ribing?
could we have been ribing?
could you have been ribing?
could they have been ribing?

Interro-negative form

Simple form

could I not rib?
could you not rib?
could she not rib?
could we not rib?
could you not rib?
could they not rib?

V-ing form

could I not be ribing?
could you not be ribing?
could she not be ribing?
could we not be ribing?
could you not be ribing?
could they not be ribing?

Perfect

could I not have ribed?
could you not have ribed?
could she not have ribed?
could we not have ribed?
could you not have ribed?
could they not have ribed?

V-ing perfect

could I not have been ribing?
could you not have been ribing?
could she not have been ribing?
could we not have been ribing?
could you not have been ribing?
could they not have been ribing?

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