could heterodyne
Verbo regular: heterodyne - heterodyned- heterodyned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could heterodyne
you could heterodyne
he could heterodyne
we could heterodyne
you could heterodyne
they could heterodyne 	I could be heterodyning
you could be heterodyning
he could be heterodyning
we could be heterodyning
you could be heterodyning
they could be heterodyning	I could have heterodyned
you could have heterodyned
he could have heterodyned
we could have heterodyned
you could have heterodyned
they could have heterodyned	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not heterodyne
you could not heterodyne
he could not heterodyne
we could not heterodyne
you could not heterodyne
they could not heterodyne 	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	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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I heterodyne?
could you heterodyne?
could he heterodyne?
could we heterodyne?
could you heterodyne?
could they heterodyne? 	could I be heterodyning?
could you be heterodyning?
could he be heterodyning?
could we be heterodyning?
could you be heterodyning?
could they be heterodyning? 	could I have heterodyned?
could you have heterodyned?
could he have heterodyned?
could we have heterodyned?
could you have heterodyned?
could they have heterodyned? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not heterodyne?
could you not heterodyne?
could he not heterodyne?
could we not heterodyne?
could you not heterodyne?
could they not heterodyne? 	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? 	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? 	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?