English verb conjugation
COULD PREFREEZE

Regular verb: prefreeze - prefreezed - prefreezed

Affirmation

Simple form	V-ing form
I could prefreeze you could prefreeze he could prefreeze we could prefreeze you could prefreeze they could prefreeze	I could be prefreezing you could be prefreezing he could be prefreezing we could be prefreezing you could be prefreezing they could be prefreezing
Perfect	V-ing perfect
I could have prefreezed you could have prefreezed he could have prefreezed we could have prefreezed you could have prefreezed they could have prefreezed	I could have been prefreezing you could have been prefreezing he could have been prefreezing we could have been prefreezing you could have been prefreezing they could have been prefreezing

Negation

Simple form	V-ing form
I could not prefreeze you could not prefreeze he could not prefreeze we could not prefreeze you could not prefreeze they could not prefreeze	I could not be prefreezing you could not be prefreezing he could not be prefreezing we could not be prefreezing you could not be prefreezing they could not be prefreezing
Perfect	V-ing perfect
I could not have prefreezed you could not have prefreezed he could not have prefreezed we could not have prefreezed you could not have prefreezed they could not have prefreezed	I could not have been prefreezing you could not have been prefreezing he could not have been prefreezing we could not have been prefreezing you could not have been prefreezing they could not have been prefreezing

Interrogative form

Simple form	V-ing form
could I prefreeze? could you prefreeze? could he prefreeze? could we prefreeze? could you prefreeze? could they prefreeze?	could I be prefreezing? could you be prefreezing? could he be prefreezing? could we be prefreezing? could you be prefreezing? could they be prefreezing?
Perfect	V-ing perfect
could I have prefreezed? could you have prefreezed? could he have prefreezed? could we have prefreezed? could you have prefreezed? could they have prefreezed?	could I have been prefreezing? could you have been prefreezing? could he have been prefreezing? could we have been prefreezing? could you have been prefreezing? could they have been prefreezing?

Interro-negative form

Simple form	V-ing form
could I not prefreeze? could you not prefreeze? could he not prefreeze? could we not prefreeze? could you not prefreeze? could they not prefreeze?	could I not be prefreezing? could you not be prefreezing? could he not be prefreezing? could we not be prefreezing? could you not be prefreezing? could they not be prefreezing?
Perfect	V-ing perfect
could I not have prefreezed? could you not have prefreezed? could he not have prefreezed? could we not have prefreezed? could you not have prefreezed? could they not have prefreezed?	could I not have been prefreezing? could you not have been prefreezing? could he not have been prefreezing? could we not have been prefreezing? could you not have been prefreezing? could they not have been prefreezing?