English verb conjugation COULD ECHO

Regular verb: echo - echoed - echoed

Affirmation

Simple form

I could echo
you could echo
she could echo
we could echo
you could echo
they could echo

V-ing form

I could be echoing
you could be echoing
she could be echoing
we could be echoing
you could be echoing
they could be echoing

Perfect

I could have echoed
you could have echoed
she could have echoed
we could have echoed
you could have echoed
they could have echoed

V-ing perfect

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

Negation

Simple form

I could not echo
you could not echo
she could not echo
we could not echo
you could not echo
they could not echo

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I echo?
could you echo?
could she echo?
could we echo?
could you echo?
could they echo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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