I could bellyflop you could bellyflop he could bellyflop we could bellyflop you could bellyflop they could bellyflop
V-ing form
I could be bellyfloping you could be bellyfloping he could be bellyfloping we could be bellyfloping you could be bellyfloping they could be bellyfloping
Perfect
I could have bellyfloped you could have bellyfloped he could have bellyfloped we could have bellyfloped you could have bellyfloped they could have bellyfloped
V-ing perfect
I could have been bellyfloping you could have been bellyfloping he could have been bellyfloping we could have been bellyfloping you could have been bellyfloping they could have been bellyfloping
Negation
Simple form
I could not bellyflop you could not bellyflop he could not bellyflop we could not bellyflop you could not bellyflop they could not bellyflop
V-ing form
I could not be bellyfloping you could not be bellyfloping he could not be bellyfloping we could not be bellyfloping you could not be bellyfloping they could not be bellyfloping
Perfect
I could not have bellyfloped you could not have bellyfloped he could not have bellyfloped we could not have bellyfloped you could not have bellyfloped they could not have bellyfloped
V-ing perfect
I could not have been bellyfloping you could not have been bellyfloping he could not have been bellyfloping we could not have been bellyfloping you could not have been bellyfloping they could not have been bellyfloping
Interrogative form
Simple form
could I bellyflop? could you bellyflop? could he bellyflop? could we bellyflop? could you bellyflop? could they bellyflop?
V-ing form
could I be bellyfloping? could you be bellyfloping? could he be bellyfloping? could we be bellyfloping? could you be bellyfloping? could they be bellyfloping?
Perfect
could I have bellyfloped? could you have bellyfloped? could he have bellyfloped? could we have bellyfloped? could you have bellyfloped? could they have bellyfloped?
V-ing perfect
could I have been bellyfloping? could you have been bellyfloping? could he have been bellyfloping? could we have been bellyfloping? could you have been bellyfloping? could they have been bellyfloping?
Interro-negative form
Simple form
could I not bellyflop? could you not bellyflop? could he not bellyflop? could we not bellyflop? could you not bellyflop? could they not bellyflop?
V-ing form
could I not be bellyfloping? could you not be bellyfloping? could he not be bellyfloping? could we not be bellyfloping? could you not be bellyfloping? could they not be bellyfloping?
Perfect
could I not have bellyfloped? could you not have bellyfloped? could he not have bellyfloped? could we not have bellyfloped? could you not have bellyfloped? could they not have bellyfloped?
V-ing perfect
could I not have been bellyfloping? could you not have been bellyfloping? could he not have been bellyfloping? could we not have been bellyfloping? could you not have been bellyfloping? could they not have been bellyfloping?