English verb conjugation
COULD NEUTER

Regular verb: neuter - neutered - neutered

Affirmation

Simple form	V-ing form
I could neuter you could neuter he could neuter we could neuter you could neuter they could neuter	I could be neutering you could be neutering he could be neutering we could be neutering you could be neutering they could be neutering
Perfect	V-ing perfect
I could have neutered you could have neutered he could have neutered we could have neutered you could have neutered they could have neutered	I could have been neutering you could have been neutering he could have been neutering we could have been neutering you could have been neutering they could have been neutering

Negation

Simple form	V-ing form
I could not neuter you could not neuter he could not neuter we could not neuter you could not neuter they could not neuter	I could not be neutering you could not be neutering he could not be neutering we could not be neutering you could not be neutering they could not be neutering
Perfect	V-ing perfect
I could not have neutered you could not have neutered he could not have neutered we could not have neutered you could not have neutered they could not have neutered	I could not have been neutering you could not have been neutering he could not have been neutering we could not have been neutering you could not have been neutering they could not have been neutering

Interrogative form

Simple form	V-ing form
could I neuter? could you neuter? could he neuter? could we neuter? could you neuter? could they neuter?	could I be neutering? could you be neutering? could he be neutering? could we be neutering? could you be neutering? could they be neutering?
Perfect	V-ing perfect
could I have neutered? could you have neutered? could he have neutered? could we have neutered? could you have neutered? could they have neutered?	could I have been neutering? could you have been neutering? could he have been neutering? could we have been neutering? could you have been neutering? could they have been neutering?

Interro-negative form

Simple form	V-ing form
could I not neuter? could you not neuter? could he not neuter? could we not neuter? could you not neuter? could they not neuter?	could I not be neutering? could you not be neutering? could he not be neutering? could we not be neutering? could you not be neutering? could they not be neutering?
Perfect	V-ing perfect
could I not have neutered? could you not have neutered? could he not have neutered? could we not have neutered? could you not have neutered? could they not have neutered?	could I not have been neutering? could you not have been neutering? could he not have been neutering? could we not have been neutering? could you not have been neutering? could they not have been neutering?