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 couldn't twinkle
you couldn't twinkle
he couldn't twinkle
we couldn't twinkle
you couldn't twinkle
they couldn't twinkle

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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