English verb conjugation
MUST PREFREEZE

Regular verb: prefreeze - prefreezed - prefreezed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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