English verb conjugation
MUST LIP-SYNC

Regular verb: lip-sync - lip-synced - lip-synced

Affirmation

Simple form	V-ing form
I must lip-sync you must lip-sync he must lip-sync we must lip-sync you must lip-sync they must lip-sync	I must be lip-syncing you must be lip-syncing he must be lip-syncing we must be lip-syncing you must be lip-syncing they must be lip-syncing
Perfect	V-ing perfect
I must have lip-synced you must have lip-synced he must have lip-synced we must have lip-synced you must have lip-synced they must have lip-synced	I must have been lip-syncing you must have been lip-syncing he must have been lip-syncing we must have been lip-syncing you must have been lip-syncing they must have been lip-syncing

Negation

Simple form	V-ing form
I must not lip-sync you must not lip-sync he must not lip-sync we must not lip-sync you must not lip-sync they must not lip-sync	I must not be lip-syncing you must not be lip-syncing he must not be lip-syncing we must not be lip-syncing you must not be lip-syncing they must not be lip-syncing
Perfect	V-ing perfect
I must not have lip-synced you must not have lip-synced he must not have lip-synced we must not have lip-synced you must not have lip-synced they must not have lip-synced	I must not have been lip-syncing you must not have been lip-syncing he must not have been lip-syncing we must not have been lip-syncing you must not have been lip-syncing they must not have been lip-syncing

Interrogative form

Simple form	V-ing form
must I lip-sync? must you lip-sync? must he lip-sync? must we lip-sync? must you lip-sync? must they lip-sync?	must I be lip-syncing? must you be lip-syncing? must he be lip-syncing? must we be lip-syncing? must you be lip-syncing? must they be lip-syncing?
Perfect	V-ing perfect
must I have lip-synced? must you have lip-synced? must he have lip-synced? must we have lip-synced? must you have lip-synced? must they have lip-synced?	must I have been lip-syncing? must you have been lip-syncing? must he have been lip-syncing? must we have been lip-syncing? must you have been lip-syncing? must they have been lip-syncing?

Interro-negative form

Simple form	V-ing form
must I not lip-sync? must you not lip-sync? must he not lip-sync? must we not lip-sync? must you not lip-sync? must they not lip-sync?	must I not be lip-syncing? must you not be lip-syncing? must he not be lip-syncing? must we not be lip-syncing? must you not be lip-syncing? must they not be lip-syncing?
Perfect	V-ing perfect
must I not have lip-synced? must you not have lip-synced? must he not have lip-synced? must we not have lip-synced? must you not have lip-synced? must they not have lip-synced?	must I not have been lip-syncing? must you not have been lip-syncing? must he not have been lip-syncing? must we not have been lip-syncing? must you not have been lip-syncing? must they not have been lip-syncing?