English verb conjugation
COULD GUEST

Regular verb: guest - guested - guested

Affirmation

Simple form	V-ing form
I could guest you could guest he could guest we could guest you could guest they could guest	I could be guesting you could be guesting he could be guesting we could be guesting you could be guesting they could be guesting
Perfect	V-ing perfect
I could have guested you could have guested he could have guested we could have guested you could have guested they could have guested	I could have been guesting you could have been guesting he could have been guesting we could have been guesting you could have been guesting they could have been guesting

Negation

Simple form	V-ing form
I could not guest you could not guest he could not guest we could not guest you could not guest they could not guest	I could not be guesting you could not be guesting he could not be guesting we could not be guesting you could not be guesting they could not be guesting
Perfect	V-ing perfect
I could not have guested you could not have guested he could not have guested we could not have guested you could not have guested they could not have guested	I could not have been guesting you could not have been guesting he could not have been guesting we could not have been guesting you could not have been guesting they could not have been guesting

Interrogative form

Simple form	V-ing form
could I guest? could you guest? could he guest? could we guest? could you guest? could they guest?	could I be guesting? could you be guesting? could he be guesting? could we be guesting? could you be guesting? could they be guesting?
Perfect	V-ing perfect
could I have guested? could you have guested? could he have guested? could we have guested? could you have guested? could they have guested?	could I have been guesting? could you have been guesting? could he have been guesting? could we have been guesting? could you have been guesting? could they have been guesting?

Interro-negative form

Simple form	V-ing form
could I not guest? could you not guest? could he not guest? could we not guest? could you not guest? could they not guest?	could I not be guesting? could you not be guesting? could he not be guesting? could we not be guesting? could you not be guesting? could they not be guesting?
Perfect	V-ing perfect
could I not have guested? could you not have guested? could he not have guested? could we not have guested? could you not have guested? could they not have guested?	could I not have been guesting? could you not have been guesting? could he not have been guesting? could we not have been guesting? could you not have been guesting? could they not have been guesting?