I must billow you must billow he must billow we must billow you must billow they must billow
Forma con V-ing
I must be billowing you must be billowing he must be billowing we must be billowing you must be billowing they must be billowing
Perfetto
I must have billowed you must have billowed he must have billowed we must have billowed you must have billowed they must have billowed
Perfetto con V-ing
I must have been billowing you must have been billowing he must have been billowing we must have been billowing you must have been billowing they must have been billowing
Negazione
Forma semplice
I must not billow you must not billow he must not billow we must not billow you must not billow they must not billow
Forma con V-ing
I must not be billowing you must not be billowing he must not be billowing we must not be billowing you must not be billowing they must not be billowing
Perfetto
I must not have billowed you must not have billowed he must not have billowed we must not have billowed you must not have billowed they must not have billowed
Perfetto con V-ing
I must not have been billowing you must not have been billowing he must not have been billowing we must not have been billowing you must not have been billowing they must not have been billowing
Forma interrogativa
Forma semplice
must I billow? must you billow? must he billow? must we billow? must you billow? must they billow?
Forma con V-ing
must I be billowing? must you be billowing? must he be billowing? must we be billowing? must you be billowing? must they be billowing?
Perfetto
must I have billowed? must you have billowed? must he have billowed? must we have billowed? must you have billowed? must they have billowed?
Perfetto con V-ing
must I have been billowing? must you have been billowing? must he have been billowing? must we have been billowing? must you have been billowing? must they have been billowing?
Forma interro-negativa
Forma semplice
must I not billow? must you not billow? must he not billow? must we not billow? must you not billow? must they not billow?
Forma con V-ing
must I not be billowing? must you not be billowing? must he not be billowing? must we not be billowing? must you not be billowing? must they not be billowing?
Perfetto
must I not have billowed? must you not have billowed? must he not have billowed? must we not have billowed? must you not have billowed? must they not have billowed?
Perfetto con V-ing
must I not have been billowing? must you not have been billowing? must he not have been billowing? must we not have been billowing? must you not have been billowing? must they not have been billowing?