English verb conjugation
MUST LIP

Regular verb: lip - liped - liped

Affirmation

Simple form	V-ing form
I must lip you must lip he must lip we must lip you must lip they must lip	I must be liping you must be liping he must be liping we must be liping you must be liping they must be liping
Perfect	V-ing perfect
I must have liped you must have liped he must have liped we must have liped you must have liped they must have liped	I must have been liping you must have been liping he must have been liping we must have been liping you must have been liping they must have been liping

Negation

Simple form	V-ing form
I must not lip you must not lip he must not lip we must not lip you must not lip they must not lip	I must not be liping you must not be liping he must not be liping we must not be liping you must not be liping they must not be liping
Perfect	V-ing perfect
I must not have liped you must not have liped he must not have liped we must not have liped you must not have liped they must not have liped	I must not have been liping you must not have been liping he must not have been liping we must not have been liping you must not have been liping they must not have been liping

Interrogative form

Simple form	V-ing form
must I lip? must you lip? must he lip? must we lip? must you lip? must they lip?	must I be liping? must you be liping? must he be liping? must we be liping? must you be liping? must they be liping?
Perfect	V-ing perfect
must I have liped? must you have liped? must he have liped? must we have liped? must you have liped? must they have liped?	must I have been liping? must you have been liping? must he have been liping? must we have been liping? must you have been liping? must they have been liping?

Interro-negative form

Simple form	V-ing form
must I not lip? must you not lip? must he not lip? must we not lip? must you not lip? must they not lip?	must I not be liping? must you not be liping? must he not be liping? must we not be liping? must you not be liping? must they not be liping?
Perfect	V-ing perfect
must I not have liped? must you not have liped? must he not have liped? must we not have liped? must you not have liped? must they not have liped?	must I not have been liping? must you not have been liping? must he not have been liping? must we not have been liping? must you not have been liping? must they not have been liping?