English verb conjugation
COULD EVERT

Regular verb: evert - everted - everted

Affirmation

Simple form	V-ing form
I could evert you could evert he could evert we could evert you could evert they could evert	I could be everting you could be everting he could be everting we could be everting you could be everting they could be everting
Perfect	V-ing perfect
I could have everted you could have everted he could have everted we could have everted you could have everted they could have everted	I could have been everting you could have been everting he could have been everting we could have been everting you could have been everting they could have been everting

Negation

Simple form	V-ing form
I could not evert you could not evert he could not evert we could not evert you could not evert they could not evert	I could not be everting you could not be everting he could not be everting we could not be everting you could not be everting they could not be everting
Perfect	V-ing perfect
I could not have everted you could not have everted he could not have everted we could not have everted you could not have everted they could not have everted	I could not have been everting you could not have been everting he could not have been everting we could not have been everting you could not have been everting they could not have been everting

Interrogative form

Simple form	V-ing form
could I evert? could you evert? could he evert? could we evert? could you evert? could they evert?	could I be everting? could you be everting? could he be everting? could we be everting? could you be everting? could they be everting?
Perfect	V-ing perfect
could I have everted? could you have everted? could he have everted? could we have everted? could you have everted? could they have everted?	could I have been everting? could you have been everting? could he have been everting? could we have been everting? could you have been everting? could they have been everting?

Interro-negative form

Simple form	V-ing form
could I not evert? could you not evert? could he not evert? could we not evert? could you not evert? could they not evert?	could I not be everting? could you not be everting? could he not be everting? could we not be everting? could you not be everting? could they not be everting?
Perfect	V-ing perfect
could I not have everted? could you not have everted? could he not have everted? could we not have everted? could you not have everted? could they not have everted?	could I not have been everting? could you not have been everting? could he not have been everting? could we not have been everting? could you not have been everting? could they not have been everting?