could single
Verbo regolare: single - singled- singled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could single
you could single
he could single
we could single
you could single
they could single 	I could be singling
you could be singling
he could be singling
we could be singling
you could be singling
they could be singling	I could have singled
you could have singled
he could have singled
we could have singled
you could have singled
they could have singled	I could have been singling
you could have been singling
he could have been singling
we could have been singling
you could have been singling
they could have been singling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not single
you could not single
he could not single
we could not single
you could not single
they could not single 	I could not be singling
you could not be singling
he could not be singling
we could not be singling
you could not be singling
they could not be singling	I could not have singled
you could not have singled
he could not have singled
we could not have singled
you could not have singled
they could not have singled	I could not have been singling
you could not have been singling
he could not have been singling
we could not have been singling
you could not have been singling
they could not have been singling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I single?
could you single?
could he single?
could we single?
could you single?
could they single? 	could I be singling?
could you be singling?
could he be singling?
could we be singling?
could you be singling?
could they be singling? 	could I have singled?
could you have singled?
could he have singled?
could we have singled?
could you have singled?
could they have singled? 	could I have been singling?
could you have been singling?
could he have been singling?
could we have been singling?
could you have been singling?
could they have been singling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not single?
could you not single?
could he not single?
could we not single?
could you not single?
could they not single? 	could I not be singling?
could you not be singling?
could he not be singling?
could we not be singling?
could you not be singling?
could they not be singling? 	could I not have singled?
could you not have singled?
could he not have singled?
could we not have singled?
could you not have singled?
could they not have singled? 	could I not have been singling?
could you not have been singling?
could he not have been singling?
could we not have been singling?
could you not have been singling?
could they not have been singling?