English verb conjugation
COULD OUTSTAY

Regular verb: outstay - outstayed - outstayed

Affirmation

Simple form	V-ing form
I could outstay you could outstay he could outstay we could outstay you could outstay they could outstay	I could be outstaying you could be outstaying he 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 he 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 he 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 couldn't outstay you couldn't outstay he couldn't outstay we couldn't outstay you couldn't outstay they couldn't outstay	I couldn't be outstaying you couldn't be outstaying he couldn't be outstaying we couldn't be outstaying you couldn't be outstaying they couldn't be outstaying
Perfect	V-ing perfect
I couldn't have outstayed you couldn't have outstayed he couldn't have outstayed we couldn't have outstayed you couldn't have outstayed they couldn't have outstayed	I couldn't have been outstaying you couldn't have been outstaying he couldn't have been outstaying we couldn't have been outstaying you couldn't have been outstaying they couldn't have been outstaying

Interrogative form

Simple form	V-ing form
could I outstay? could you outstay? could he outstay? could we outstay? could you outstay? could they outstay?	could I be outstaying? could you be outstaying? could he 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 he 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 he 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
couldn't I outstay? couldn't you outstay? couldn't he outstay? couldn't we outstay? couldn't you outstay? couldn't they outstay?	couldn't I be outstaying? couldn't you be outstaying? couldn't he be outstaying? couldn't we be outstaying? couldn't you be outstaying? couldn't they be outstaying?
Perfect	V-ing perfect
couldn't I have outstayed? couldn't you have outstayed? couldn't he have outstayed? couldn't we have outstayed? couldn't you have outstayed? couldn't they have outstayed?	couldn't I have been outstaying? couldn't you have been outstaying? couldn't he have been outstaying? couldn't we have been outstaying? couldn't you have been outstaying? couldn't they have been outstaying?