I must helenise you must helenise he must helenise we must helenise you must helenise they must helenise
Forma con V-ing
I must be helenising you must be helenising he must be helenising we must be helenising you must be helenising they must be helenising
Perfecto
I must have helenised you must have helenised he must have helenised we must have helenised you must have helenised they must have helenised
Perfecto con V-ing
I must have been helenising you must have been helenising he must have been helenising we must have been helenising you must have been helenising they must have been helenising
Negación
Forma simple
I must not helenise you must not helenise he must not helenise we must not helenise you must not helenise they must not helenise
Forma con V-ing
I must not be helenising you must not be helenising he must not be helenising we must not be helenising you must not be helenising they must not be helenising
Perfecto
I must not have helenised you must not have helenised he must not have helenised we must not have helenised you must not have helenised they must not have helenised
Perfecto con V-ing
I must not have been helenising you must not have been helenising he must not have been helenising we must not have been helenising you must not have been helenising they must not have been helenising
Forma interrogativa
Forma simple
must I helenise? must you helenise? must he helenise? must we helenise? must you helenise? must they helenise?
Forma con V-ing
must I be helenising? must you be helenising? must he be helenising? must we be helenising? must you be helenising? must they be helenising?
Perfecto
must I have helenised? must you have helenised? must he have helenised? must we have helenised? must you have helenised? must they have helenised?
Perfecto con V-ing
must I have been helenising? must you have been helenising? must he have been helenising? must we have been helenising? must you have been helenising? must they have been helenising?
Forma interro-negativa
Forma simple
must I not helenise? must you not helenise? must he not helenise? must we not helenise? must you not helenise? must they not helenise?
Forma con V-ing
must I not be helenising? must you not be helenising? must he not be helenising? must we not be helenising? must you not be helenising? must they not be helenising?
Perfecto
must I not have helenised? must you not have helenised? must he not have helenised? must we not have helenised? must you not have helenised? must they not have helenised?
Perfecto con V-ing
must I not have been helenising? must you not have been helenising? must he not have been helenising? must we not have been helenising? must you not have been helenising? must they not have been helenising?