I could billow you could billow he could billow we could billow you could billow they could billow
Forma con V-ing
I could be billowing you could be billowing he could be billowing we could be billowing you could be billowing they could be billowing
Perfetto
I could have billowed you could have billowed he could have billowed we could have billowed you could have billowed they could have billowed
Perfetto con V-ing
I could have been billowing you could have been billowing he could have been billowing we could have been billowing you could have been billowing they could have been billowing
Negazione
Forma semplice
I couldn't billow you couldn't billow he couldn't billow we couldn't billow you couldn't billow they couldn't billow
Forma con V-ing
I couldn't be billowing you couldn't be billowing he couldn't be billowing we couldn't be billowing you couldn't be billowing they couldn't be billowing
Perfetto
I couldn't have billowed you couldn't have billowed he couldn't have billowed we couldn't have billowed you couldn't have billowed they couldn't have billowed
Perfetto con V-ing
I couldn't have been billowing you couldn't have been billowing he couldn't have been billowing we couldn't have been billowing you couldn't have been billowing they couldn't have been billowing
Forma interrogativa
Forma semplice
could I billow? could you billow? could he billow? could we billow? could you billow? could they billow?
Forma con V-ing
could I be billowing? could you be billowing? could he be billowing? could we be billowing? could you be billowing? could they be billowing?
Perfetto
could I have billowed? could you have billowed? could he have billowed? could we have billowed? could you have billowed? could they have billowed?
Perfetto con V-ing
could I have been billowing? could you have been billowing? could he have been billowing? could we have been billowing? could you have been billowing? could they have been billowing?
Forma interro-negativa
Forma semplice
couldn't I billow? couldn't you billow? couldn't he billow? couldn't we billow? couldn't you billow? couldn't they billow?
Forma con V-ing
couldn't I be billowing? couldn't you be billowing? couldn't he be billowing? couldn't we be billowing? couldn't you be billowing? couldn't they be billowing?
Perfetto
couldn't I have billowed? couldn't you have billowed? couldn't he have billowed? couldn't we have billowed? couldn't you have billowed? couldn't they have billowed?
Perfetto con V-ing
couldn't I have been billowing? couldn't you have been billowing? couldn't he have been billowing? couldn't we have been billowing? couldn't you have been billowing? couldn't they have been billowing?