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 must not ossify you must not ossify he must not ossify we must not ossify you must not ossify they must not ossify
Forme en V-ing
I must not be ossifying you must not be ossifying he must not be ossifying we must not be ossifying you must not be ossifying they must not be ossifying
Perfect
I must not have ossified you must not have ossified he must not have ossified we must not have ossified you must not have ossified they must not have ossified
Perfect en V-ing
I must not have been ossifying you must not have been ossifying he must not have been ossifying we must not have been ossifying you must not have been ossifying they must not 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
must I not ossify? must you not ossify? must he not ossify? must we not ossify? must you not ossify? must they not ossify?
Forme en V-ing
must I not be ossifying? must you not be ossifying? must he not be ossifying? must we not be ossifying? must you not be ossifying? must they not be ossifying?
Perfect
must I not have ossified? must you not have ossified? must he not have ossified? must we not have ossified? must you not have ossified? must they not have ossified?
Perfect en V-ing
must I not have been ossifying? must you not have been ossifying? must he not have been ossifying? must we not have been ossifying? must you not have been ossifying? must they not have been ossifying?