could percuss
Verbo regular: percuss - percussed- percussed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could percuss
you could percuss
he could percuss
we could percuss
you could percuss
they could percuss 	I could be percussing
you could be percussing
he could be percussing
we could be percussing
you could be percussing
they could be percussing	I could have percussed
you could have percussed
he could have percussed
we could have percussed
you could have percussed
they could have percussed	I could have been percussing
you could have been percussing
he could have been percussing
we could have been percussing
you could have been percussing
they could have been percussing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not percuss
you could not percuss
he could not percuss
we could not percuss
you could not percuss
they could not percuss 	I could not be percussing
you could not be percussing
he could not be percussing
we could not be percussing
you could not be percussing
they could not be percussing	I could not have percussed
you could not have percussed
he could not have percussed
we could not have percussed
you could not have percussed
they could not have percussed	I could not have been percussing
you could not have been percussing
he could not have been percussing
we could not have been percussing
you could not have been percussing
they could not have been percussing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I percuss?
could you percuss?
could he percuss?
could we percuss?
could you percuss?
could they percuss? 	could I be percussing?
could you be percussing?
could he be percussing?
could we be percussing?
could you be percussing?
could they be percussing? 	could I have percussed?
could you have percussed?
could he have percussed?
could we have percussed?
could you have percussed?
could they have percussed? 	could I have been percussing?
could you have been percussing?
could he have been percussing?
could we have been percussing?
could you have been percussing?
could they have been percussing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not percuss?
could you not percuss?
could he not percuss?
could we not percuss?
could you not percuss?
could they not percuss? 	could I not be percussing?
could you not be percussing?
could he not be percussing?
could we not be percussing?
could you not be percussing?
could they not be percussing? 	could I not have percussed?
could you not have percussed?
could he not have percussed?
could we not have percussed?
could you not have percussed?
could they not have percussed? 	could I not have been percussing?
could you not have been percussing?
could he not have been percussing?
could we not have been percussing?
could you not have been percussing?
could they not have been percussing?