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 couldn't ko
you couldn't ko
he couldn't ko
we couldn't ko
you couldn't ko
they couldn't ko

V-ing form

I couldn't be koing
you couldn't be koing
he couldn't be koing
we couldn't be koing
you couldn't be koing
they couldn't be koing

Perfect

I couldn't have koed
you couldn't have koed
he couldn't have koed
we couldn't have koed
you couldn't have koed
they couldn't have koed

V-ing perfect

I couldn't have been koing
you couldn't have been koing
he couldn't have been koing
we couldn't have been koing
you couldn't have been koing
they couldn't 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

couldn't I ko?
couldn't you ko?
couldn't he ko?
couldn't we ko?
couldn't you ko?
couldn't they ko?

V-ing form

couldn't I be koing?
couldn't you be koing?
couldn't he be koing?
couldn't we be koing?
couldn't you be koing?
couldn't they be koing?

Perfect

couldn't I have koed?
couldn't you have koed?
couldn't he have koed?
couldn't we have koed?
couldn't you have koed?
couldn't they have koed?

V-ing perfect

couldn't I have been koing?
couldn't you have been koing?
couldn't he have been koing?
couldn't we have been koing?
couldn't you have been koing?
couldn't they have been koing?