I could summate you could summate he could summate we could summate you could summate they could summate
Forma con V-ing
I could be summating you could be summating he could be summating we could be summating you could be summating they could be summating
Perfetto
I could have summated you could have summated he could have summated we could have summated you could have summated they could have summated
Perfetto con V-ing
I could have been summating you could have been summating he could have been summating we could have been summating you could have been summating they could have been summating
Negazione
Forma semplice
I could not summate you could not summate he could not summate we could not summate you could not summate they could not summate
Forma con V-ing
I could not be summating you could not be summating he could not be summating we could not be summating you could not be summating they could not be summating
Perfetto
I could not have summated you could not have summated he could not have summated we could not have summated you could not have summated they could not have summated
Perfetto con V-ing
I could not have been summating you could not have been summating he could not have been summating we could not have been summating you could not have been summating they could not have been summating
Forma interrogativa
Forma semplice
could I summate? could you summate? could he summate? could we summate? could you summate? could they summate?
Forma con V-ing
could I be summating? could you be summating? could he be summating? could we be summating? could you be summating? could they be summating?
Perfetto
could I have summated? could you have summated? could he have summated? could we have summated? could you have summated? could they have summated?
Perfetto con V-ing
could I have been summating? could you have been summating? could he have been summating? could we have been summating? could you have been summating? could they have been summating?
Forma interro-negativa
Forma semplice
could I not summate? could you not summate? could he not summate? could we not summate? could you not summate? could they not summate?
Forma con V-ing
could I not be summating? could you not be summating? could he not be summating? could we not be summating? could you not be summating? could they not be summating?
Perfetto
could I not have summated? could you not have summated? could he not have summated? could we not have summated? could you not have summated? could they not have summated?
Perfetto con V-ing
could I not have been summating? could you not have been summating? could he not have been summating? could we not have been summating? could you not have been summating? could they not have been summating?