could hum
Verbo regolare: hum - humed- humed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could hum
you could hum
he could hum
we could hum
you could hum
they could hum 	I could be huming
you could be huming
he could be huming
we could be huming
you could be huming
they could be huming	I could have humed
you could have humed
he could have humed
we could have humed
you could have humed
they could have humed	I could have been huming
you could have been huming
he could have been huming
we could have been huming
you could have been huming
they could have been huming	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not hum
you could not hum
he could not hum
we could not hum
you could not hum
they could not hum 	I could not be huming
you could not be huming
he could not be huming
we could not be huming
you could not be huming
they could not be huming	I could not have humed
you could not have humed
he could not have humed
we could not have humed
you could not have humed
they could not have humed	I could not have been huming
you could not have been huming
he could not have been huming
we could not have been huming
you could not have been huming
they could not have been huming	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I hum?
could you hum?
could he hum?
could we hum?
could you hum?
could they hum? 	could I be huming?
could you be huming?
could he be huming?
could we be huming?
could you be huming?
could they be huming? 	could I have humed?
could you have humed?
could he have humed?
could we have humed?
could you have humed?
could they have humed? 	could I have been huming?
could you have been huming?
could he have been huming?
could we have been huming?
could you have been huming?
could they have been huming? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not hum?
could you not hum?
could he not hum?
could we not hum?
could you not hum?
could they not hum? 	could I not be huming?
could you not be huming?
could he not be huming?
could we not be huming?
could you not be huming?
could they not be huming? 	could I not have humed?
could you not have humed?
could he not have humed?
could we not have humed?
could you not have humed?
could they not have humed? 	could I not have been huming?
could you not have been huming?
could he not have been huming?
could we not have been huming?
could you not have been huming?
could they not have been huming?