could serry
Verbo regular: serry - serried- serried

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could serry
you could serry
he could serry
we could serry
you could serry
they could serry 	I could be serrying
you could be serrying
he could be serrying
we could be serrying
you could be serrying
they could be serrying	I could have serried
you could have serried
he could have serried
we could have serried
you could have serried
they could have serried	I could have been serrying
you could have been serrying
he could have been serrying
we could have been serrying
you could have been serrying
they could have been serrying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not serry
you could not serry
he could not serry
we could not serry
you could not serry
they could not serry 	I could not be serrying
you could not be serrying
he could not be serrying
we could not be serrying
you could not be serrying
they could not be serrying	I could not have serried
you could not have serried
he could not have serried
we could not have serried
you could not have serried
they could not have serried	I could not have been serrying
you could not have been serrying
he could not have been serrying
we could not have been serrying
you could not have been serrying
they could not have been serrying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I serry?
could you serry?
could he serry?
could we serry?
could you serry?
could they serry? 	could I be serrying?
could you be serrying?
could he be serrying?
could we be serrying?
could you be serrying?
could they be serrying? 	could I have serried?
could you have serried?
could he have serried?
could we have serried?
could you have serried?
could they have serried? 	could I have been serrying?
could you have been serrying?
could he have been serrying?
could we have been serrying?
could you have been serrying?
could they have been serrying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not serry?
could you not serry?
could he not serry?
could we not serry?
could you not serry?
could they not serry? 	could I not be serrying?
could you not be serrying?
could he not be serrying?
could we not be serrying?
could you not be serrying?
could they not be serrying? 	could I not have serried?
could you not have serried?
could he not have serried?
could we not have serried?
could you not have serried?
could they not have serried? 	could I not have been serrying?
could you not have been serrying?
could he not have been serrying?
could we not have been serrying?
could you not have been serrying?
could they not have been serrying?