I must valve you must valve he must valve we must valve you must valve they must valve
Forme en V-ing
I must be valving you must be valving he must be valving we must be valving you must be valving they must be valving
Perfect
I must have valved you must have valved he must have valved we must have valved you must have valved they must have valved
Perfect en V-ing
I must have been valving you must have been valving he must have been valving we must have been valving you must have been valving they must have been valving
Négation
Forme simple
I must not valve you must not valve he must not valve we must not valve you must not valve they must not valve
Forme en V-ing
I must not be valving you must not be valving he must not be valving we must not be valving you must not be valving they must not be valving
Perfect
I must not have valved you must not have valved he must not have valved we must not have valved you must not have valved they must not have valved
Perfect en V-ing
I must not have been valving you must not have been valving he must not have been valving we must not have been valving you must not have been valving they must not have been valving
Forme interrogative
Forme simple
must I valve? must you valve? must he valve? must we valve? must you valve? must they valve?
Forme en V-ing
must I be valving? must you be valving? must he be valving? must we be valving? must you be valving? must they be valving?
Perfect
must I have valved? must you have valved? must he have valved? must we have valved? must you have valved? must they have valved?
Perfect en V-ing
must I have been valving? must you have been valving? must he have been valving? must we have been valving? must you have been valving? must they have been valving?
Forme interro-négative
Forme simple
must I not valve? must you not valve? must he not valve? must we not valve? must you not valve? must they not valve?
Forme en V-ing
must I not be valving? must you not be valving? must he not be valving? must we not be valving? must you not be valving? must they not be valving?
Perfect
must I not have valved? must you not have valved? must he not have valved? must we not have valved? must you not have valved? must they not have valved?
Perfect en V-ing
must I not have been valving? must you not have been valving? must he not have been valving? must we not have been valving? must you not have been valving? must they not have been valving?