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