I must concur you must concur he must concur we must concur you must concur they must concur
Forma con V-ing
I must be concurring you must be concurring he must be concurring we must be concurring you must be concurring they must be concurring
Perfecto
I must have concurred you must have concurred he must have concurred we must have concurred you must have concurred they must have concurred
Perfecto con V-ing
I must have been concurring you must have been concurring he must have been concurring we must have been concurring you must have been concurring they must have been concurring
Negación
Forma simple
I mustn't concur you mustn't concur he mustn't concur we mustn't concur you mustn't concur they mustn't concur
Forma con V-ing
I mustn't be concurring you mustn't be concurring he mustn't be concurring we mustn't be concurring you mustn't be concurring they mustn't be concurring
Perfecto
I mustn't have concurred you mustn't have concurred he mustn't have concurred we mustn't have concurred you mustn't have concurred they mustn't have concurred
Perfecto con V-ing
I mustn't have been concurring you mustn't have been concurring he mustn't have been concurring we mustn't have been concurring you mustn't have been concurring they mustn't have been concurring
Forma interrogativa
Forma simple
must I concur? must you concur? must he concur? must we concur? must you concur? must they concur?
Forma con V-ing
must I be concurring? must you be concurring? must he be concurring? must we be concurring? must you be concurring? must they be concurring?
Perfecto
must I have concurred? must you have concurred? must he have concurred? must we have concurred? must you have concurred? must they have concurred?
Perfecto con V-ing
must I have been concurring? must you have been concurring? must he have been concurring? must we have been concurring? must you have been concurring? must they have been concurring?
Forma interro-negativa
Forma simple
mustn't I concur? mustn't you concur? mustn't he concur? mustn't we concur? mustn't you concur? mustn't they concur?
Forma con V-ing
mustn't I be concurring? mustn't you be concurring? mustn't he be concurring? mustn't we be concurring? mustn't you be concurring? mustn't they be concurring?
Perfecto
mustn't I have concurred? mustn't you have concurred? mustn't he have concurred? mustn't we have concurred? mustn't you have concurred? mustn't they have concurred?
Perfecto con V-ing
mustn't I have been concurring? mustn't you have been concurring? mustn't he have been concurring? mustn't we have been concurring? mustn't you have been concurring? mustn't they have been concurring?