English verb conjugation
MUST PREWEIGH

Regular verb: preweigh - preweighed - preweighed

Affirmation

Simple form	V-ing form
I must preweigh you must preweigh he must preweigh we must preweigh you must preweigh they must preweigh	I must be preweighing you must be preweighing he must be preweighing we must be preweighing you must be preweighing they must be preweighing
Perfect	V-ing perfect
I must have preweighed you must have preweighed he must have preweighed we must have preweighed you must have preweighed they must have preweighed	I must have been preweighing you must have been preweighing he must have been preweighing we must have been preweighing you must have been preweighing they must have been preweighing

Negation

Simple form	V-ing form
I must not preweigh you must not preweigh he must not preweigh we must not preweigh you must not preweigh they must not preweigh	I must not be preweighing you must not be preweighing he must not be preweighing we must not be preweighing you must not be preweighing they must not be preweighing
Perfect	V-ing perfect
I must not have preweighed you must not have preweighed he must not have preweighed we must not have preweighed you must not have preweighed they must not have preweighed	I must not have been preweighing you must not have been preweighing he must not have been preweighing we must not have been preweighing you must not have been preweighing they must not have been preweighing

Interrogative form

Simple form	V-ing form
must I preweigh? must you preweigh? must he preweigh? must we preweigh? must you preweigh? must they preweigh?	must I be preweighing? must you be preweighing? must he be preweighing? must we be preweighing? must you be preweighing? must they be preweighing?
Perfect	V-ing perfect
must I have preweighed? must you have preweighed? must he have preweighed? must we have preweighed? must you have preweighed? must they have preweighed?	must I have been preweighing? must you have been preweighing? must he have been preweighing? must we have been preweighing? must you have been preweighing? must they have been preweighing?

Interro-negative form

Simple form	V-ing form
must I not preweigh? must you not preweigh? must he not preweigh? must we not preweigh? must you not preweigh? must they not preweigh?	must I not be preweighing? must you not be preweighing? must he not be preweighing? must we not be preweighing? must you not be preweighing? must they not be preweighing?
Perfect	V-ing perfect
must I not have preweighed? must you not have preweighed? must he not have preweighed? must we not have preweighed? must you not have preweighed? must they not have preweighed?	must I not have been preweighing? must you not have been preweighing? must he not have been preweighing? must we not have been preweighing? must you not have been preweighing? must they not have been preweighing?