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 mustn't valve you mustn't valve he mustn't valve we mustn't valve you mustn't valve they mustn't valve
Forme en V-ing
I mustn't be valving you mustn't be valving he mustn't be valving we mustn't be valving you mustn't be valving they mustn't be valving
Perfect
I mustn't have valved you mustn't have valved he mustn't have valved we mustn't have valved you mustn't have valved they mustn't have valved
Perfect en V-ing
I mustn't have been valving you mustn't have been valving he mustn't have been valving we mustn't have been valving you mustn't have been valving they mustn't 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
mustn't I valve? mustn't you valve? mustn't he valve? mustn't we valve? mustn't you valve? mustn't they valve?
Forme en V-ing
mustn't I be valving? mustn't you be valving? mustn't he be valving? mustn't we be valving? mustn't you be valving? mustn't they be valving?
Perfect
mustn't I have valved? mustn't you have valved? mustn't he have valved? mustn't we have valved? mustn't you have valved? mustn't they have valved?
Perfect en V-ing
mustn't I have been valving? mustn't you have been valving? mustn't he have been valving? mustn't we have been valving? mustn't you have been valving? mustn't they have been valving?