English verb conjugation
COULD SHORT

Regular verb: short - shorted - shorted

Affirmation

Simple form	V-ing form
I could short you could short he could short we could short you could short they could short	I could be shorting you could be shorting he could be shorting we could be shorting you could be shorting they could be shorting
Perfect	V-ing perfect
I could have shorted you could have shorted he could have shorted we could have shorted you could have shorted they could have shorted	I could have been shorting you could have been shorting he could have been shorting we could have been shorting you could have been shorting they could have been shorting

Negation

Simple form	V-ing form
I could not short you could not short he could not short we could not short you could not short they could not short	I could not be shorting you could not be shorting he could not be shorting we could not be shorting you could not be shorting they could not be shorting
Perfect	V-ing perfect
I could not have shorted you could not have shorted he could not have shorted we could not have shorted you could not have shorted they could not have shorted	I could not have been shorting you could not have been shorting he could not have been shorting we could not have been shorting you could not have been shorting they could not have been shorting

Interrogative form

Simple form	V-ing form
could I short? could you short? could he short? could we short? could you short? could they short?	could I be shorting? could you be shorting? could he be shorting? could we be shorting? could you be shorting? could they be shorting?
Perfect	V-ing perfect
could I have shorted? could you have shorted? could he have shorted? could we have shorted? could you have shorted? could they have shorted?	could I have been shorting? could you have been shorting? could he have been shorting? could we have been shorting? could you have been shorting? could they have been shorting?

Interro-negative form

Simple form	V-ing form
could I not short? could you not short? could he not short? could we not short? could you not short? could they not short?	could I not be shorting? could you not be shorting? could he not be shorting? could we not be shorting? could you not be shorting? could they not be shorting?
Perfect	V-ing perfect
could I not have shorted? could you not have shorted? could he not have shorted? could we not have shorted? could you not have shorted? could they not have shorted?	could I not have been shorting? could you not have been shorting? could he not have been shorting? could we not have been shorting? could you not have been shorting? could they not have been shorting?