I could heterodyne you could heterodyne he could heterodyne we could heterodyne you could heterodyne they could heterodyne
V-ing form
I could be heterodyning you could be heterodyning he could be heterodyning we could be heterodyning you could be heterodyning they could be heterodyning
Perfect
I could have heterodyned you could have heterodyned he could have heterodyned we could have heterodyned you could have heterodyned they could have heterodyned
V-ing perfect
I could have been heterodyning you could have been heterodyning he could have been heterodyning we could have been heterodyning you could have been heterodyning they could have been heterodyning
Negation
Simple form
I could not heterodyne you could not heterodyne he could not heterodyne we could not heterodyne you could not heterodyne they could not heterodyne
V-ing form
I could not be heterodyning you could not be heterodyning he could not be heterodyning we could not be heterodyning you could not be heterodyning they could not be heterodyning
Perfect
I could not have heterodyned you could not have heterodyned he could not have heterodyned we could not have heterodyned you could not have heterodyned they could not have heterodyned
V-ing perfect
I could not have been heterodyning you could not have been heterodyning he could not have been heterodyning we could not have been heterodyning you could not have been heterodyning they could not have been heterodyning
Interrogative form
Simple form
could I heterodyne? could you heterodyne? could he heterodyne? could we heterodyne? could you heterodyne? could they heterodyne?
V-ing form
could I be heterodyning? could you be heterodyning? could he be heterodyning? could we be heterodyning? could you be heterodyning? could they be heterodyning?
Perfect
could I have heterodyned? could you have heterodyned? could he have heterodyned? could we have heterodyned? could you have heterodyned? could they have heterodyned?
V-ing perfect
could I have been heterodyning? could you have been heterodyning? could he have been heterodyning? could we have been heterodyning? could you have been heterodyning? could they have been heterodyning?
Interro-negative form
Simple form
could I not heterodyne? could you not heterodyne? could he not heterodyne? could we not heterodyne? could you not heterodyne? could they not heterodyne?
V-ing form
could I not be heterodyning? could you not be heterodyning? could he not be heterodyning? could we not be heterodyning? could you not be heterodyning? could they not be heterodyning?
Perfect
could I not have heterodyned? could you not have heterodyned? could he not have heterodyned? could we not have heterodyned? could you not have heterodyned? could they not have heterodyned?
V-ing perfect
could I not have been heterodyning? could you not have been heterodyning? could he not have been heterodyning? could we not have been heterodyning? could you not have been heterodyning? could they not have been heterodyning?