I must bubble you must bubble she must bubble we must bubble you must bubble they must bubble
Forma con V-ing
I must be bubbling you must be bubbling she must be bubbling we must be bubbling you must be bubbling they must be bubbling
Perfetto
I must have bubbled you must have bubbled she must have bubbled we must have bubbled you must have bubbled they must have bubbled
Perfetto con V-ing
I must have been bubbling you must have been bubbling she must have been bubbling we must have been bubbling you must have been bubbling they must have been bubbling
Negazione
Forma semplice
I must not bubble you must not bubble she must not bubble we must not bubble you must not bubble they must not bubble
Forma con V-ing
I must not be bubbling you must not be bubbling she must not be bubbling we must not be bubbling you must not be bubbling they must not be bubbling
Perfetto
I must not have bubbled you must not have bubbled she must not have bubbled we must not have bubbled you must not have bubbled they must not have bubbled
Perfetto con V-ing
I must not have been bubbling you must not have been bubbling she must not have been bubbling we must not have been bubbling you must not have been bubbling they must not have been bubbling
Forma interrogativa
Forma semplice
must I bubble? must you bubble? must she bubble? must we bubble? must you bubble? must they bubble?
Forma con V-ing
must I be bubbling? must you be bubbling? must she be bubbling? must we be bubbling? must you be bubbling? must they be bubbling?
Perfetto
must I have bubbled? must you have bubbled? must she have bubbled? must we have bubbled? must you have bubbled? must they have bubbled?
Perfetto con V-ing
must I have been bubbling? must you have been bubbling? must she have been bubbling? must we have been bubbling? must you have been bubbling? must they have been bubbling?
Forma interro-negativa
Forma semplice
must I not bubble? must you not bubble? must she not bubble? must we not bubble? must you not bubble? must they not bubble?
Forma con V-ing
must I not be bubbling? must you not be bubbling? must she not be bubbling? must we not be bubbling? must you not be bubbling? must they not be bubbling?
Perfetto
must I not have bubbled? must you not have bubbled? must she not have bubbled? must we not have bubbled? must you not have bubbled? must they not have bubbled?
Perfetto con V-ing
must I not have been bubbling? must you not have been bubbling? must she not have been bubbling? must we not have been bubbling? must you not have been bubbling? must they not have been bubbling?