English verb conjugation COULD KO

Regular verb: ko - koed - koed


Affirmation

Simple form

I could ko
you could ko
he could ko
we could ko
you could ko
they could ko

V-ing form

I could be koing
you could be koing
he could be koing
we could be koing
you could be koing
they could be koing

Perfect

I could have koed
you could have koed
he could have koed
we could have koed
you could have koed
they could have koed

V-ing perfect

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

Negation

Simple form

I could not ko
you could not ko
he could not ko
we could not ko
you could not ko
they could not ko

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I ko?
could you ko?
could he ko?
could we ko?
could you ko?
could they ko?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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