English verb conjugation
COULD OVERSPILL

Regular verb: overspill - overspilled - overspilled

Affirmation

Simple form	V-ing form
I could overspill you could overspill he could overspill we could overspill you could overspill they could overspill	I could be overspilling you could be overspilling he could be overspilling we could be overspilling you could be overspilling they could be overspilling
Perfect	V-ing perfect
I could have overspilled you could have overspilled he could have overspilled we could have overspilled you could have overspilled they could have overspilled	I could have been overspilling you could have been overspilling he could have been overspilling we could have been overspilling you could have been overspilling they could have been overspilling

Negation

Simple form	V-ing form
I couldn't overspill you couldn't overspill he couldn't overspill we couldn't overspill you couldn't overspill they couldn't overspill	I couldn't be overspilling you couldn't be overspilling he couldn't be overspilling we couldn't be overspilling you couldn't be overspilling they couldn't be overspilling
Perfect	V-ing perfect
I couldn't have overspilled you couldn't have overspilled he couldn't have overspilled we couldn't have overspilled you couldn't have overspilled they couldn't have overspilled	I couldn't have been overspilling you couldn't have been overspilling he couldn't have been overspilling we couldn't have been overspilling you couldn't have been overspilling they couldn't have been overspilling

Interrogative form

Simple form	V-ing form
could I overspill? could you overspill? could he overspill? could we overspill? could you overspill? could they overspill?	could I be overspilling? could you be overspilling? could he be overspilling? could we be overspilling? could you be overspilling? could they be overspilling?
Perfect	V-ing perfect
could I have overspilled? could you have overspilled? could he have overspilled? could we have overspilled? could you have overspilled? could they have overspilled?	could I have been overspilling? could you have been overspilling? could he have been overspilling? could we have been overspilling? could you have been overspilling? could they have been overspilling?

Interro-negative form

Simple form	V-ing form
couldn't I overspill? couldn't you overspill? couldn't he overspill? couldn't we overspill? couldn't you overspill? couldn't they overspill?	couldn't I be overspilling? couldn't you be overspilling? couldn't he be overspilling? couldn't we be overspilling? couldn't you be overspilling? couldn't they be overspilling?
Perfect	V-ing perfect
couldn't I have overspilled? couldn't you have overspilled? couldn't he have overspilled? couldn't we have overspilled? couldn't you have overspilled? couldn't they have overspilled?	couldn't I have been overspilling? couldn't you have been overspilling? couldn't he have been overspilling? couldn't we have been overspilling? couldn't you have been overspilling? couldn't they have been overspilling?