English verb conjugation COULD PUNCTURE

Regular verb: puncture - punctured - punctured

Affirmation

Simple form

I could puncture
you could puncture
he could puncture
we could puncture
you could puncture
they could puncture

V-ing form

I could be puncturing
you could be puncturing
he could be puncturing
we could be puncturing
you could be puncturing
they could be puncturing

Perfect

I could have punctured
you could have punctured
he could have punctured
we could have punctured
you could have punctured
they could have punctured

V-ing perfect

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

Negation

Simple form

I couldn't puncture
you couldn't puncture
he couldn't puncture
we couldn't puncture
you couldn't puncture
they couldn't puncture

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I puncture?
could you puncture?
could he puncture?
could we puncture?
could you puncture?
could they puncture?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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