English verb conjugation COULD TWINKLE

Regular verb: twinkle - twinkled - twinkled

Affirmation

Simple form

I could twinkle
you could twinkle
he could twinkle
we could twinkle
you could twinkle
they could twinkle

V-ing form

I could be twinkling
you could be twinkling
he could be twinkling
we could be twinkling
you could be twinkling
they could be twinkling

Perfect

I could have twinkled
you could have twinkled
he could have twinkled
we could have twinkled
you could have twinkled
they could have twinkled

V-ing perfect

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

Negation

Simple form

I could not twinkle
you could not twinkle
he could not twinkle
we could not twinkle
you could not twinkle
they could not twinkle

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I twinkle?
could you twinkle?
could he twinkle?
could we twinkle?
could you twinkle?
could they twinkle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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