English verb conjugation
COULD OUTSTAY

Regular verb: outstay - outstayed - outstayed

Affirmation

Simple form	V-ing form
I could outstay you could outstay she could outstay we could outstay you could outstay they could outstay	I could be outstaying you could be outstaying she could be outstaying we could be outstaying you could be outstaying they could be outstaying
Perfect	V-ing perfect
I could have outstayed you could have outstayed she could have outstayed we could have outstayed you could have outstayed they could have outstayed	I could have been outstaying you could have been outstaying she could have been outstaying we could have been outstaying you could have been outstaying they could have been outstaying

Negation

Simple form	V-ing form
I could not outstay you could not outstay she could not outstay we could not outstay you could not outstay they could not outstay	I could not be outstaying you could not be outstaying she could not be outstaying we could not be outstaying you could not be outstaying they could not be outstaying
Perfect	V-ing perfect
I could not have outstayed you could not have outstayed she could not have outstayed we could not have outstayed you could not have outstayed they could not have outstayed	I could not have been outstaying you could not have been outstaying she could not have been outstaying we could not have been outstaying you could not have been outstaying they could not have been outstaying

Interrogative form

Simple form	V-ing form
could I outstay? could you outstay? could she outstay? could we outstay? could you outstay? could they outstay?	could I be outstaying? could you be outstaying? could she be outstaying? could we be outstaying? could you be outstaying? could they be outstaying?
Perfect	V-ing perfect
could I have outstayed? could you have outstayed? could she have outstayed? could we have outstayed? could you have outstayed? could they have outstayed?	could I have been outstaying? could you have been outstaying? could she have been outstaying? could we have been outstaying? could you have been outstaying? could they have been outstaying?

Interro-negative form

Simple form	V-ing form
could I not outstay? could you not outstay? could she not outstay? could we not outstay? could you not outstay? could they not outstay?	could I not be outstaying? could you not be outstaying? could she not be outstaying? could we not be outstaying? could you not be outstaying? could they not be outstaying?
Perfect	V-ing perfect
could I not have outstayed? could you not have outstayed? could she not have outstayed? could we not have outstayed? could you not have outstayed? could they not have outstayed?	could I not have been outstaying? could you not have been outstaying? could she not have been outstaying? could we not have been outstaying? could you not have been outstaying? could they not have been outstaying?