I must ossify you must ossify he must ossify we must ossify you must ossify they must ossify
Forme en V-ing
I must be ossifying you must be ossifying he must be ossifying we must be ossifying you must be ossifying they must be ossifying
Perfect
I must have ossified you must have ossified he must have ossified we must have ossified you must have ossified they must have ossified
Perfect en V-ing
I must have been ossifying you must have been ossifying he must have been ossifying we must have been ossifying you must have been ossifying they must have been ossifying
Négation
Forme simple
I mustn't ossify you mustn't ossify he mustn't ossify we mustn't ossify you mustn't ossify they mustn't ossify
Forme en V-ing
I mustn't be ossifying you mustn't be ossifying he mustn't be ossifying we mustn't be ossifying you mustn't be ossifying they mustn't be ossifying
Perfect
I mustn't have ossified you mustn't have ossified he mustn't have ossified we mustn't have ossified you mustn't have ossified they mustn't have ossified
Perfect en V-ing
I mustn't have been ossifying you mustn't have been ossifying he mustn't have been ossifying we mustn't have been ossifying you mustn't have been ossifying they mustn't have been ossifying
Forme interrogative
Forme simple
must I ossify? must you ossify? must he ossify? must we ossify? must you ossify? must they ossify?
Forme en V-ing
must I be ossifying? must you be ossifying? must he be ossifying? must we be ossifying? must you be ossifying? must they be ossifying?
Perfect
must I have ossified? must you have ossified? must he have ossified? must we have ossified? must you have ossified? must they have ossified?
Perfect en V-ing
must I have been ossifying? must you have been ossifying? must he have been ossifying? must we have been ossifying? must you have been ossifying? must they have been ossifying?
Forme interro-négative
Forme simple
mustn't I ossify? mustn't you ossify? mustn't he ossify? mustn't we ossify? mustn't you ossify? mustn't they ossify?
Forme en V-ing
mustn't I be ossifying? mustn't you be ossifying? mustn't he be ossifying? mustn't we be ossifying? mustn't you be ossifying? mustn't they be ossifying?
Perfect
mustn't I have ossified? mustn't you have ossified? mustn't he have ossified? mustn't we have ossified? mustn't you have ossified? mustn't they have ossified?
Perfect en V-ing
mustn't I have been ossifying? mustn't you have been ossifying? mustn't he have been ossifying? mustn't we have been ossifying? mustn't you have been ossifying? mustn't they have been ossifying?