I must claim you must claim he must claim we must claim you must claim they must claim
V-ing form
I must be claiming you must be claiming he must be claiming we must be claiming you must be claiming they must be claiming
Perfect
I must have claimed you must have claimed he must have claimed we must have claimed you must have claimed they must have claimed
V-ing perfect
I must have been claiming you must have been claiming he must have been claiming we must have been claiming you must have been claiming they must have been claiming
Negation
Simple form
I mustn't claim you mustn't claim he mustn't claim we mustn't claim you mustn't claim they mustn't claim
V-ing form
I mustn't be claiming you mustn't be claiming he mustn't be claiming we mustn't be claiming you mustn't be claiming they mustn't be claiming
Perfect
I mustn't have claimed you mustn't have claimed he mustn't have claimed we mustn't have claimed you mustn't have claimed they mustn't have claimed
V-ing perfect
I mustn't have been claiming you mustn't have been claiming he mustn't have been claiming we mustn't have been claiming you mustn't have been claiming they mustn't have been claiming
Interrogative form
Simple form
must I claim? must you claim? must he claim? must we claim? must you claim? must they claim?
V-ing form
must I be claiming? must you be claiming? must he be claiming? must we be claiming? must you be claiming? must they be claiming?
Perfect
must I have claimed? must you have claimed? must he have claimed? must we have claimed? must you have claimed? must they have claimed?
V-ing perfect
must I have been claiming? must you have been claiming? must he have been claiming? must we have been claiming? must you have been claiming? must they have been claiming?
Interro-negative form
Simple form
mustn't I claim? mustn't you claim? mustn't he claim? mustn't we claim? mustn't you claim? mustn't they claim?
V-ing form
mustn't I be claiming? mustn't you be claiming? mustn't he be claiming? mustn't we be claiming? mustn't you be claiming? mustn't they be claiming?
Perfect
mustn't I have claimed? mustn't you have claimed? mustn't he have claimed? mustn't we have claimed? mustn't you have claimed? mustn't they have claimed?
V-ing perfect
mustn't I have been claiming? mustn't you have been claiming? mustn't he have been claiming? mustn't we have been claiming? mustn't you have been claiming? mustn't they have been claiming?