English verb conjugation COULD START

Regular verb: start - started - started

Affirmation

Simple form

I could start
you could start
she could start
we could start
you could start
they could start

V-ing form

I could be starting
you could be starting
she could be starting
we could be starting
you could be starting
they could be starting

Perfect

I could have started
you could have started
she could have started
we could have started
you could have started
they could have started

V-ing perfect

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

Negation

Simple form

I could not start
you could not start
she could not start
we could not start
you could not start
they could not start

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I start?
could you start?
could she start?
could we start?
could you start?
could they start?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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