I could poop you could poop he could poop we could poop you could poop they could poop
V-ing form
I could be pooping you could be pooping he could be pooping we could be pooping you could be pooping they could be pooping
Perfect
I could have pooped you could have pooped he could have pooped we could have pooped you could have pooped they could have pooped
V-ing perfect
I could have been pooping you could have been pooping he could have been pooping we could have been pooping you could have been pooping they could have been pooping
Negation
Simple form
I could not poop you could not poop he could not poop we could not poop you could not poop they could not poop
V-ing form
I could not be pooping you could not be pooping he could not be pooping we could not be pooping you could not be pooping they could not be pooping
Perfect
I could not have pooped you could not have pooped he could not have pooped we could not have pooped you could not have pooped they could not have pooped
V-ing perfect
I could not have been pooping you could not have been pooping he could not have been pooping we could not have been pooping you could not have been pooping they could not have been pooping
Interrogative form
Simple form
could I poop? could you poop? could he poop? could we poop? could you poop? could they poop?
V-ing form
could I be pooping? could you be pooping? could he be pooping? could we be pooping? could you be pooping? could they be pooping?
Perfect
could I have pooped? could you have pooped? could he have pooped? could we have pooped? could you have pooped? could they have pooped?
V-ing perfect
could I have been pooping? could you have been pooping? could he have been pooping? could we have been pooping? could you have been pooping? could they have been pooping?
Interro-negative form
Simple form
could I not poop? could you not poop? could he not poop? could we not poop? could you not poop? could they not poop?
V-ing form
could I not be pooping? could you not be pooping? could he not be pooping? could we not be pooping? could you not be pooping? could they not be pooping?
Perfect
could I not have pooped? could you not have pooped? could he not have pooped? could we not have pooped? could you not have pooped? could they not have pooped?
V-ing perfect
could I not have been pooping? could you not have been pooping? could he not have been pooping? could we not have been pooping? could you not have been pooping? could they not have been pooping?