English verb conjugation COULD TWIN

Regular verb: twin - twinned - twinned

Affirmation

Simple form

I could twin
you could twin
he could twin
we could twin
you could twin
they could twin

V-ing form

I could be twinning
you could be twinning
he could be twinning
we could be twinning
you could be twinning
they could be twinning

Perfect

I could have twinned
you could have twinned
he could have twinned
we could have twinned
you could have twinned
they could have twinned

V-ing perfect

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

Negation

Simple form

I could not twin
you could not twin
he could not twin
we could not twin
you could not twin
they could not twin

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I twin?
could you twin?
could he twin?
could we twin?
could you twin?
could they twin?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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