must lip-sync
Verbe régulier : lip-sync - lip-synced- lip-synced

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't lip-sync
you mustn't lip-sync
he mustn't lip-sync
we mustn't lip-sync
you mustn't lip-sync
they mustn't lip-sync 	I mustn't be lip-syncing
you mustn't be lip-syncing
he mustn't be lip-syncing
we mustn't be lip-syncing
you mustn't be lip-syncing
they mustn't be lip-syncing	I mustn't have lip-synced
you mustn't have lip-synced
he mustn't have lip-synced
we mustn't have lip-synced
you mustn't have lip-synced
they mustn't have lip-synced	I mustn't have been lip-syncing
you mustn't have been lip-syncing
he mustn't have been lip-syncing
we mustn't have been lip-syncing
you mustn't have been lip-syncing
they mustn't have been lip-syncing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I lip-sync?
mustn't you lip-sync?
mustn't he lip-sync?
mustn't we lip-sync?
mustn't you lip-sync?
mustn't they lip-sync? 	mustn't I be lip-syncing?
mustn't you be lip-syncing?
mustn't he be lip-syncing?
mustn't we be lip-syncing?
mustn't you be lip-syncing?
mustn't they be lip-syncing? 	mustn't I have lip-synced?
mustn't you have lip-synced?
mustn't he have lip-synced?
mustn't we have lip-synced?
mustn't you have lip-synced?
mustn't they have lip-synced? 	mustn't I have been lip-syncing?
mustn't you have been lip-syncing?
mustn't he have been lip-syncing?
mustn't we have been lip-syncing?
mustn't you have been lip-syncing?
mustn't they have been lip-syncing?