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 couldn't outstay you couldn't outstay she 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 she 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 she 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 she 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 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
couldn't I outstay? couldn't you outstay? couldn't she 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 she 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 she 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 she have been outstaying? couldn't we have been outstaying? couldn't you have been outstaying? couldn't they have been outstaying?