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 couldn't evert you couldn't evert he couldn't evert we couldn't evert you couldn't evert they couldn't evert	I couldn't be everting you couldn't be everting he couldn't be everting we couldn't be everting you couldn't be everting they couldn't be everting
Perfect	V-ing perfect
I couldn't have everted you couldn't have everted he couldn't have everted we couldn't have everted you couldn't have everted they couldn't have everted	I couldn't have been everting you couldn't have been everting he couldn't have been everting we couldn't have been everting you couldn't have been everting they couldn't 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
couldn't I evert? couldn't you evert? couldn't he evert? couldn't we evert? couldn't you evert? couldn't they evert?	couldn't I be everting? couldn't you be everting? couldn't he be everting? couldn't we be everting? couldn't you be everting? couldn't they be everting?
Perfect	V-ing perfect
couldn't I have everted? couldn't you have everted? couldn't he have everted? couldn't we have everted? couldn't you have everted? couldn't they have everted?	couldn't I have been everting? couldn't you have been everting? couldn't he have been everting? couldn't we have been everting? couldn't you have been everting? couldn't they have been everting?