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 couldn't tart you couldn't tart he couldn't tart we couldn't tart you couldn't tart they couldn't tart	I couldn't be tarting you couldn't be tarting he couldn't be tarting we couldn't be tarting you couldn't be tarting they couldn't be tarting
Perfect	V-ing perfect
I couldn't have tarted you couldn't have tarted he couldn't have tarted we couldn't have tarted you couldn't have tarted they couldn't have tarted	I couldn't have been tarting you couldn't have been tarting he couldn't have been tarting we couldn't have been tarting you couldn't have been tarting they couldn't 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
couldn't I tart? couldn't you tart? couldn't he tart? couldn't we tart? couldn't you tart? couldn't they tart?	couldn't I be tarting? couldn't you be tarting? couldn't he be tarting? couldn't we be tarting? couldn't you be tarting? couldn't they be tarting?
Perfect	V-ing perfect
couldn't I have tarted? couldn't you have tarted? couldn't he have tarted? couldn't we have tarted? couldn't you have tarted? couldn't they have tarted?	couldn't I have been tarting? couldn't you have been tarting? couldn't he have been tarting? couldn't we have been tarting? couldn't you have been tarting? couldn't they have been tarting?