I must krass you must krass he must krass we must krass you must krass they must krass
Forme en V-ing
I must be krassing you must be krassing he must be krassing we must be krassing you must be krassing they must be krassing
Perfect
I must have krassed you must have krassed he must have krassed we must have krassed you must have krassed they must have krassed
Perfect en V-ing
I must have been krassing you must have been krassing he must have been krassing we must have been krassing you must have been krassing they must have been krassing
Négation
Forme simple
I must not krass you must not krass he must not krass we must not krass you must not krass they must not krass
Forme en V-ing
I must not be krassing you must not be krassing he must not be krassing we must not be krassing you must not be krassing they must not be krassing
Perfect
I must not have krassed you must not have krassed he must not have krassed we must not have krassed you must not have krassed they must not have krassed
Perfect en V-ing
I must not have been krassing you must not have been krassing he must not have been krassing we must not have been krassing you must not have been krassing they must not have been krassing
Forme interrogative
Forme simple
must I krass? must you krass? must he krass? must we krass? must you krass? must they krass?
Forme en V-ing
must I be krassing? must you be krassing? must he be krassing? must we be krassing? must you be krassing? must they be krassing?
Perfect
must I have krassed? must you have krassed? must he have krassed? must we have krassed? must you have krassed? must they have krassed?
Perfect en V-ing
must I have been krassing? must you have been krassing? must he have been krassing? must we have been krassing? must you have been krassing? must they have been krassing?
Forme interro-négative
Forme simple
must I not krass? must you not krass? must he not krass? must we not krass? must you not krass? must they not krass?
Forme en V-ing
must I not be krassing? must you not be krassing? must he not be krassing? must we not be krassing? must you not be krassing? must they not be krassing?
Perfect
must I not have krassed? must you not have krassed? must he not have krassed? must we not have krassed? must you not have krassed? must they not have krassed?
Perfect en V-ing
must I not have been krassing? must you not have been krassing? must he not have been krassing? must we not have been krassing? must you not have been krassing? must they not have been krassing?