English verb conjugation COULD PEN

Regular verb: pen - penned - penned

Affirmation

Simple form

I could pen
you could pen
she could pen
we could pen
you could pen
they could pen

V-ing form

I could be penning
you could be penning
she could be penning
we could be penning
you could be penning
they could be penning

Perfect

I could have penned
you could have penned
she could have penned
we could have penned
you could have penned
they could have penned

V-ing perfect

I could have been penning
you could have been penning
she could have been penning
we could have been penning
you could have been penning
they could have been penning

Negation

Simple form

I could not pen
you could not pen
she could not pen
we could not pen
you could not pen
they could not pen

V-ing form

I could not be penning
you could not be penning
she could not be penning
we could not be penning
you could not be penning
they could not be penning

Perfect

I could not have penned
you could not have penned
she could not have penned
we could not have penned
you could not have penned
they could not have penned

V-ing perfect

I could not have been penning
you could not have been penning
she could not have been penning
we could not have been penning
you could not have been penning
they could not have been penning

Interrogative form

Simple form

could I pen?
could you pen?
could she pen?
could we pen?
could you pen?
could they pen?

V-ing form

could I be penning?
could you be penning?
could she be penning?
could we be penning?
could you be penning?
could they be penning?

Perfect

could I have penned?
could you have penned?
could she have penned?
could we have penned?
could you have penned?
could they have penned?

V-ing perfect

could I have been penning?
could you have been penning?
could she have been penning?
could we have been penning?
could you have been penning?
could they have been penning?

Interro-negative form

Simple form

could I not pen?
could you not pen?
could she not pen?
could we not pen?
could you not pen?
could they not pen?

V-ing form

could I not be penning?
could you not be penning?
could she not be penning?
could we not be penning?
could you not be penning?
could they not be penning?

Perfect

could I not have penned?
could you not have penned?
could she not have penned?
could we not have penned?
could you not have penned?
could they not have penned?

V-ing perfect

could I not have been penning?
could you not have been penning?
could she not have been penning?
could we not have been penning?
could you not have been penning?
could they not have been penning?

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