English verb conjugation COULD SAILPLANE

Regular verb: sailplane - sailplaned - sailplaned

Affirmation

Simple form

I could sailplane
you could sailplane
he could sailplane
we could sailplane
you could sailplane
they could sailplane

V-ing form

I could be sailplaning
you could be sailplaning
he could be sailplaning
we could be sailplaning
you could be sailplaning
they could be sailplaning

Perfect

I could have sailplaned
you could have sailplaned
he could have sailplaned
we could have sailplaned
you could have sailplaned
they could have sailplaned

V-ing perfect

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

Negation

Simple form

I could not sailplane
you could not sailplane
he could not sailplane
we could not sailplane
you could not sailplane
they could not sailplane

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I sailplane?
could you sailplane?
could he sailplane?
could we sailplane?
could you sailplane?
could they sailplane?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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