I must snake you must snake he must snake we must snake you must snake they must snake
Forme en V-ing
I must be snaking you must be snaking he must be snaking we must be snaking you must be snaking they must be snaking
Perfect
I must have snaked you must have snaked he must have snaked we must have snaked you must have snaked they must have snaked
Perfect en V-ing
I must have been snaking you must have been snaking he must have been snaking we must have been snaking you must have been snaking they must have been snaking
Négation
Forme simple
I must not snake you must not snake he must not snake we must not snake you must not snake they must not snake
Forme en V-ing
I must not be snaking you must not be snaking he must not be snaking we must not be snaking you must not be snaking they must not be snaking
Perfect
I must not have snaked you must not have snaked he must not have snaked we must not have snaked you must not have snaked they must not have snaked
Perfect en V-ing
I must not have been snaking you must not have been snaking he must not have been snaking we must not have been snaking you must not have been snaking they must not have been snaking
Forme interrogative
Forme simple
must I snake? must you snake? must he snake? must we snake? must you snake? must they snake?
Forme en V-ing
must I be snaking? must you be snaking? must he be snaking? must we be snaking? must you be snaking? must they be snaking?
Perfect
must I have snaked? must you have snaked? must he have snaked? must we have snaked? must you have snaked? must they have snaked?
Perfect en V-ing
must I have been snaking? must you have been snaking? must he have been snaking? must we have been snaking? must you have been snaking? must they have been snaking?
Forme interro-négative
Forme simple
must I not snake? must you not snake? must he not snake? must we not snake? must you not snake? must they not snake?
Forme en V-ing
must I not be snaking? must you not be snaking? must he not be snaking? must we not be snaking? must you not be snaking? must they not be snaking?
Perfect
must I not have snaked? must you not have snaked? must he not have snaked? must we not have snaked? must you not have snaked? must they not have snaked?
Perfect en V-ing
must I not have been snaking? must you not have been snaking? must he not have been snaking? must we not have been snaking? must you not have been snaking? must they not have been snaking?