English verb conjugation
COULD SWIM SWIM

Regular verb: swim swim - swim swimed - swim swimed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could swim swim you could swim swim he could swim swim we could swim swim you could swim swim they could swim swim	I could be swim swiming you could be swim swiming he could be swim swiming we could be swim swiming you could be swim swiming they could be swim swiming
Perfect	V-ing perfect
I could have swim swimed you could have swim swimed he could have swim swimed we could have swim swimed you could have swim swimed they could have swim swimed	I could have been swim swiming you could have been swim swiming he could have been swim swiming we could have been swim swiming you could have been swim swiming they could have been swim swiming

Negation

Simple form	V-ing form
I could not swim swim you could not swim swim he could not swim swim we could not swim swim you could not swim swim they could not swim swim	I could not be swim swiming you could not be swim swiming he could not be swim swiming we could not be swim swiming you could not be swim swiming they could not be swim swiming
Perfect	V-ing perfect
I could not have swim swimed you could not have swim swimed he could not have swim swimed we could not have swim swimed you could not have swim swimed they could not have swim swimed	I could not have been swim swiming you could not have been swim swiming he could not have been swim swiming we could not have been swim swiming you could not have been swim swiming they could not have been swim swiming

Interrogative form

Simple form	V-ing form
could I swim swim? could you swim swim? could he swim swim? could we swim swim? could you swim swim? could they swim swim?	could I be swim swiming? could you be swim swiming? could he be swim swiming? could we be swim swiming? could you be swim swiming? could they be swim swiming?
Perfect	V-ing perfect
could I have swim swimed? could you have swim swimed? could he have swim swimed? could we have swim swimed? could you have swim swimed? could they have swim swimed?	could I have been swim swiming? could you have been swim swiming? could he have been swim swiming? could we have been swim swiming? could you have been swim swiming? could they have been swim swiming?

Interro-negative form

Simple form	V-ing form
could I not swim swim? could you not swim swim? could he not swim swim? could we not swim swim? could you not swim swim? could they not swim swim?	could I not be swim swiming? could you not be swim swiming? could he not be swim swiming? could we not be swim swiming? could you not be swim swiming? could they not be swim swiming?
Perfect	V-ing perfect
could I not have swim swimed? could you not have swim swimed? could he not have swim swimed? could we not have swim swimed? could you not have swim swimed? could they not have swim swimed?	could I not have been swim swiming? could you not have been swim swiming? could he not have been swim swiming? could we not have been swim swiming? could you not have been swim swiming? could they not have been swim swiming?