could rot
Verbo regular: rot - rotted- rotted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could rot
you could rot
he could rot
we could rot
you could rot
they could rot 	I could be rotting
you could be rotting
he could be rotting
we could be rotting
you could be rotting
they could be rotting	I could have rotted
you could have rotted
he could have rotted
we could have rotted
you could have rotted
they could have rotted	I could have been rotting
you could have been rotting
he could have been rotting
we could have been rotting
you could have been rotting
they could have been rotting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not rot
you could not rot
he could not rot
we could not rot
you could not rot
they could not rot 	I could not be rotting
you could not be rotting
he could not be rotting
we could not be rotting
you could not be rotting
they could not be rotting	I could not have rotted
you could not have rotted
he could not have rotted
we could not have rotted
you could not have rotted
they could not have rotted	I could not have been rotting
you could not have been rotting
he could not have been rotting
we could not have been rotting
you could not have been rotting
they could not have been rotting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I rot?
could you rot?
could he rot?
could we rot?
could you rot?
could they rot? 	could I be rotting?
could you be rotting?
could he be rotting?
could we be rotting?
could you be rotting?
could they be rotting? 	could I have rotted?
could you have rotted?
could he have rotted?
could we have rotted?
could you have rotted?
could they have rotted? 	could I have been rotting?
could you have been rotting?
could he have been rotting?
could we have been rotting?
could you have been rotting?
could they have been rotting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not rot?
could you not rot?
could he not rot?
could we not rot?
could you not rot?
could they not rot? 	could I not be rotting?
could you not be rotting?
could he not be rotting?
could we not be rotting?
could you not be rotting?
could they not be rotting? 	could I not have rotted?
could you not have rotted?
could he not have rotted?
could we not have rotted?
could you not have rotted?
could they not have rotted? 	could I not have been rotting?
could you not have been rotting?
could he not have been rotting?
could we not have been rotting?
could you not have been rotting?
could they not have been rotting?