English verb conjugation
COULD TART

Regular verb: tart - tarted - tarted

Affirmation

Simple form	V-ing form
I could tart you could tart he could tart we could tart you could tart they could tart	I could be tarting you could be tarting he could be tarting we could be tarting you could be tarting they could be tarting
Perfect	V-ing perfect
I could have tarted you could have tarted he could have tarted we could have tarted you could have tarted they could have tarted	I could have been tarting you could have been tarting he could have been tarting we could have been tarting you could have been tarting they could have been tarting

Negation

Simple form	V-ing form
I could not tart you could not tart he could not tart we could not tart you could not tart they could not tart	I could not be tarting you could not be tarting he could not be tarting we could not be tarting you could not be tarting they could not be tarting
Perfect	V-ing perfect
I could not have tarted you could not have tarted he could not have tarted we could not have tarted you could not have tarted they could not have tarted	I could not have been tarting you could not have been tarting he could not have been tarting we could not have been tarting you could not have been tarting they could not have been tarting

Interrogative form

Simple form	V-ing form
could I tart? could you tart? could he tart? could we tart? could you tart? could they tart?	could I be tarting? could you be tarting? could he be tarting? could we be tarting? could you be tarting? could they be tarting?
Perfect	V-ing perfect
could I have tarted? could you have tarted? could he have tarted? could we have tarted? could you have tarted? could they have tarted?	could I have been tarting? could you have been tarting? could he have been tarting? could we have been tarting? could you have been tarting? could they have been tarting?

Interro-negative form

Simple form	V-ing form
could I not tart? could you not tart? could he not tart? could we not tart? could you not tart? could they not tart?	could I not be tarting? could you not be tarting? could he not be tarting? could we not be tarting? could you not be tarting? could they not be tarting?
Perfect	V-ing perfect
could I not have tarted? could you not have tarted? could he not have tarted? could we not have tarted? could you not have tarted? could they not have tarted?	could I not have been tarting? could you not have been tarting? could he not have been tarting? could we not have been tarting? could you not have been tarting? could they not have been tarting?