must cuirass
Verbe régulier : cuirass - cuirassed- cuirassed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must cuirass
you must cuirass
he must cuirass
we must cuirass
you must cuirass
they must cuirass 	I must be cuirassing
you must be cuirassing
he must be cuirassing
we must be cuirassing
you must be cuirassing
they must be cuirassing	I must have cuirassed
you must have cuirassed
he must have cuirassed
we must have cuirassed
you must have cuirassed
they must have cuirassed	I must have been cuirassing
you must have been cuirassing
he must have been cuirassing
we must have been cuirassing
you must have been cuirassing
they must have been cuirassing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't cuirass
you mustn't cuirass
he mustn't cuirass
we mustn't cuirass
you mustn't cuirass
they mustn't cuirass 	I mustn't be cuirassing
you mustn't be cuirassing
he mustn't be cuirassing
we mustn't be cuirassing
you mustn't be cuirassing
they mustn't be cuirassing	I mustn't have cuirassed
you mustn't have cuirassed
he mustn't have cuirassed
we mustn't have cuirassed
you mustn't have cuirassed
they mustn't have cuirassed	I mustn't have been cuirassing
you mustn't have been cuirassing
he mustn't have been cuirassing
we mustn't have been cuirassing
you mustn't have been cuirassing
they mustn't have been cuirassing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I cuirass?
must you cuirass?
must he cuirass?
must we cuirass?
must you cuirass?
must they cuirass? 	must I be cuirassing?
must you be cuirassing?
must he be cuirassing?
must we be cuirassing?
must you be cuirassing?
must they be cuirassing? 	must I have cuirassed?
must you have cuirassed?
must he have cuirassed?
must we have cuirassed?
must you have cuirassed?
must they have cuirassed? 	must I have been cuirassing?
must you have been cuirassing?
must he have been cuirassing?
must we have been cuirassing?
must you have been cuirassing?
must they have been cuirassing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I cuirass?
mustn't you cuirass?
mustn't he cuirass?
mustn't we cuirass?
mustn't you cuirass?
mustn't they cuirass? 	mustn't I be cuirassing?
mustn't you be cuirassing?
mustn't he be cuirassing?
mustn't we be cuirassing?
mustn't you be cuirassing?
mustn't they be cuirassing? 	mustn't I have cuirassed?
mustn't you have cuirassed?
mustn't he have cuirassed?
mustn't we have cuirassed?
mustn't you have cuirassed?
mustn't they have cuirassed? 	mustn't I have been cuirassing?
mustn't you have been cuirassing?
mustn't he have been cuirassing?
mustn't we have been cuirassing?
mustn't you have been cuirassing?
mustn't they have been cuirassing?