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 couldn't prototype you couldn't prototype he couldn't prototype we couldn't prototype you couldn't prototype they couldn't prototype	I couldn't be prototyping you couldn't be prototyping he couldn't be prototyping we couldn't be prototyping you couldn't be prototyping they couldn't be prototyping
Perfecto	Perfecto con V-ing
I couldn't have prototyped you couldn't have prototyped he couldn't have prototyped we couldn't have prototyped you couldn't have prototyped they couldn't have prototyped	I couldn't have been prototyping you couldn't have been prototyping he couldn't have been prototyping we couldn't have been prototyping you couldn't have been prototyping they couldn't 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
couldn't I prototype? couldn't you prototype? couldn't he prototype? couldn't we prototype? couldn't you prototype? couldn't they prototype?	couldn't I be prototyping? couldn't you be prototyping? couldn't he be prototyping? couldn't we be prototyping? couldn't you be prototyping? couldn't they be prototyping?
Perfecto	Perfecto con V-ing
couldn't I have prototyped? couldn't you have prototyped? couldn't he have prototyped? couldn't we have prototyped? couldn't you have prototyped? couldn't they have prototyped?	couldn't I have been prototyping? couldn't you have been prototyping? couldn't he have been prototyping? couldn't we have been prototyping? couldn't you have been prototyping? couldn't they have been prototyping?