I could perfect you could perfect he could perfect we could perfect you could perfect they could perfect
Forma con V-ing
I could be perfecting you could be perfecting he could be perfecting we could be perfecting you could be perfecting they could be perfecting
Perfetto
I could have perfected you could have perfected he could have perfected we could have perfected you could have perfected they could have perfected
Perfetto con V-ing
I could have been perfecting you could have been perfecting he could have been perfecting we could have been perfecting you could have been perfecting they could have been perfecting
Negazione
Forma semplice
I could not perfect you could not perfect he could not perfect we could not perfect you could not perfect they could not perfect
Forma con V-ing
I could not be perfecting you could not be perfecting he could not be perfecting we could not be perfecting you could not be perfecting they could not be perfecting
Perfetto
I could not have perfected you could not have perfected he could not have perfected we could not have perfected you could not have perfected they could not have perfected
Perfetto con V-ing
I could not have been perfecting you could not have been perfecting he could not have been perfecting we could not have been perfecting you could not have been perfecting they could not have been perfecting
Forma interrogativa
Forma semplice
could I perfect? could you perfect? could he perfect? could we perfect? could you perfect? could they perfect?
Forma con V-ing
could I be perfecting? could you be perfecting? could he be perfecting? could we be perfecting? could you be perfecting? could they be perfecting?
Perfetto
could I have perfected? could you have perfected? could he have perfected? could we have perfected? could you have perfected? could they have perfected?
Perfetto con V-ing
could I have been perfecting? could you have been perfecting? could he have been perfecting? could we have been perfecting? could you have been perfecting? could they have been perfecting?
Forma interro-negativa
Forma semplice
could I not perfect? could you not perfect? could he not perfect? could we not perfect? could you not perfect? could they not perfect?
Forma con V-ing
could I not be perfecting? could you not be perfecting? could he not be perfecting? could we not be perfecting? could you not be perfecting? could they not be perfecting?
Perfetto
could I not have perfected? could you not have perfected? could he not have perfected? could we not have perfected? could you not have perfected? could they not have perfected?
Perfetto con V-ing
could I not have been perfecting? could you not have been perfecting? could he not have been perfecting? could we not have been perfecting? could you not have been perfecting? could they not have been perfecting?