Conjugación del verbo inglés
COULD PROTOTYPE

Verbo regular: prototype - prototyped - prototyped

Afirmación

Forma simple	Forma con V-ing
I could prototype you could prototype he could prototype we could prototype you could prototype they could prototype	I could be prototyping you could be prototyping he could be prototyping we could be prototyping you could be prototyping they could be prototyping
Perfecto	Perfecto con V-ing
I could have prototyped you could have prototyped he could have prototyped we could have prototyped you could have prototyped they could have prototyped	I could have been prototyping you could have been prototyping he could have been prototyping we could have been prototyping you could have been prototyping they could have been prototyping

Negación

Forma simple	Forma con V-ing
I could not prototype you could not prototype he could not prototype we could not prototype you could not prototype they could not prototype	I could not be prototyping you could not be prototyping he could not be prototyping we could not be prototyping you could not be prototyping they could not be prototyping
Perfecto	Perfecto con V-ing
I could not have prototyped you could not have prototyped he could not have prototyped we could not have prototyped you could not have prototyped they could not have prototyped	I could not have been prototyping you could not have been prototyping he could not have been prototyping we could not have been prototyping you could not have been prototyping they could not have been prototyping

Forma interrogativa

Forma simple	Forma con V-ing
could I prototype? could you prototype? could he prototype? could we prototype? could you prototype? could they prototype?	could I be prototyping? could you be prototyping? could he be prototyping? could we be prototyping? could you be prototyping? could they be prototyping?
Perfecto	Perfecto con V-ing
could I have prototyped? could you have prototyped? could he have prototyped? could we have prototyped? could you have prototyped? could they have prototyped?	could I have been prototyping? could you have been prototyping? could he have been prototyping? could we have been prototyping? could you have been prototyping? could they have been prototyping?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not prototype? could you not prototype? could he not prototype? could we not prototype? could you not prototype? could they not prototype?	could I not be prototyping? could you not be prototyping? could he not be prototyping? could we not be prototyping? could you not be prototyping? could they not be prototyping?
Perfecto	Perfecto con V-ing
could I not have prototyped? could you not have prototyped? could he not have prototyped? could we not have prototyped? could you not have prototyped? could they not have prototyped?	could I not have been prototyping? could you not have been prototyping? could he not have been prototyping? could we not have been prototyping? could you not have been prototyping? could they not have been prototyping?