English verb conjugation COULD GROAN

Regular verb: groan - groaned - groaned

Affirmation

Simple form

I could groan
you could groan
he could groan
we could groan
you could groan
they could groan

V-ing form

I could be groaning
you could be groaning
he could be groaning
we could be groaning
you could be groaning
they could be groaning

Perfect

I could have groaned
you could have groaned
he could have groaned
we could have groaned
you could have groaned
they could have groaned

V-ing perfect

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

Negation

Simple form

I could not groan
you could not groan
he could not groan
we could not groan
you could not groan
they could not groan

V-ing form

I could not be groaning
you could not be groaning
he could not be groaning
we could not be groaning
you could not be groaning
they could not be groaning

Perfect

I could not have groaned
you could not have groaned
he could not have groaned
we could not have groaned
you could not have groaned
they could not have groaned

V-ing perfect

I could not have been groaning
you could not have been groaning
he could not have been groaning
we could not have been groaning
you could not have been groaning
they could not have been groaning

Interrogative form

Simple form

could I groan?
could you groan?
could he groan?
could we groan?
could you groan?
could they groan?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not groan?
could you not groan?
could he not groan?
could we not groan?
could you not groan?
could they not groan?

V-ing form

could I not be groaning?
could you not be groaning?
could he not be groaning?
could we not be groaning?
could you not be groaning?
could they not be groaning?

Perfect

could I not have groaned?
could you not have groaned?
could he not have groaned?
could we not have groaned?
could you not have groaned?
could they not have groaned?

V-ing perfect

could I not have been groaning?
could you not have been groaning?
could he not have been groaning?
could we not have been groaning?
could you not have been groaning?
could they not have been groaning?

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