English verb conjugation COULD SWAN

Regular verb: swan - swaned - swaned

Affirmation

Simple form

I could swan
you could swan
she could swan
we could swan
you could swan
they could swan

V-ing form

I could be swaning
you could be swaning
she could be swaning
we could be swaning
you could be swaning
they could be swaning

Perfect

I could have swaned
you could have swaned
she could have swaned
we could have swaned
you could have swaned
they could have swaned

V-ing perfect

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

Negation

Simple form

I could not swan
you could not swan
she could not swan
we could not swan
you could not swan
they could not swan

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I swan?
could you swan?
could she swan?
could we swan?
could you swan?
could they swan?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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