English verb conjugation
COULD INVAGINATE

Regular verb: invaginate - invaginated - invaginated

Affirmation

Simple form	V-ing form
I could invaginate you could invaginate he could invaginate we could invaginate you could invaginate they could invaginate	I could be invaginating you could be invaginating he could be invaginating we could be invaginating you could be invaginating they could be invaginating
Perfect	V-ing perfect
I could have invaginated you could have invaginated he could have invaginated we could have invaginated you could have invaginated they could have invaginated	I could have been invaginating you could have been invaginating he could have been invaginating we could have been invaginating you could have been invaginating they could have been invaginating

Negation

Simple form	V-ing form
I could not invaginate you could not invaginate he could not invaginate we could not invaginate you could not invaginate they could not invaginate	I could not be invaginating you could not be invaginating he could not be invaginating we could not be invaginating you could not be invaginating they could not be invaginating
Perfect	V-ing perfect
I could not have invaginated you could not have invaginated he could not have invaginated we could not have invaginated you could not have invaginated they could not have invaginated	I could not have been invaginating you could not have been invaginating he could not have been invaginating we could not have been invaginating you could not have been invaginating they could not have been invaginating

Interrogative form

Simple form	V-ing form
could I invaginate? could you invaginate? could he invaginate? could we invaginate? could you invaginate? could they invaginate?	could I be invaginating? could you be invaginating? could he be invaginating? could we be invaginating? could you be invaginating? could they be invaginating?
Perfect	V-ing perfect
could I have invaginated? could you have invaginated? could he have invaginated? could we have invaginated? could you have invaginated? could they have invaginated?	could I have been invaginating? could you have been invaginating? could he have been invaginating? could we have been invaginating? could you have been invaginating? could they have been invaginating?

Interro-negative form

Simple form	V-ing form
could I not invaginate? could you not invaginate? could he not invaginate? could we not invaginate? could you not invaginate? could they not invaginate?	could I not be invaginating? could you not be invaginating? could he not be invaginating? could we not be invaginating? could you not be invaginating? could they not be invaginating?
Perfect	V-ing perfect
could I not have invaginated? could you not have invaginated? could he not have invaginated? could we not have invaginated? could you not have invaginated? could they not have invaginated?	could I not have been invaginating? could you not have been invaginating? could he not have been invaginating? could we not have been invaginating? could you not have been invaginating? could they not have been invaginating?