Conjugación del verbo inglés
COULD PIONEER

Verbo regular: pioneer - pioneered - pioneered

Afirmación

Forma simple	Forma con V-ing
I could pioneer you could pioneer he could pioneer we could pioneer you could pioneer they could pioneer	I could be pioneering you could be pioneering he could be pioneering we could be pioneering you could be pioneering they could be pioneering
Perfecto	Perfecto con V-ing
I could have pioneered you could have pioneered he could have pioneered we could have pioneered you could have pioneered they could have pioneered	I could have been pioneering you could have been pioneering he could have been pioneering we could have been pioneering you could have been pioneering they could have been pioneering

Negación

Forma simple	Forma con V-ing
I could not pioneer you could not pioneer he could not pioneer we could not pioneer you could not pioneer they could not pioneer	I could not be pioneering you could not be pioneering he could not be pioneering we could not be pioneering you could not be pioneering they could not be pioneering
Perfecto	Perfecto con V-ing
I could not have pioneered you could not have pioneered he could not have pioneered we could not have pioneered you could not have pioneered they could not have pioneered	I could not have been pioneering you could not have been pioneering he could not have been pioneering we could not have been pioneering you could not have been pioneering they could not have been pioneering

Forma interrogativa

Forma simple	Forma con V-ing
could I pioneer? could you pioneer? could he pioneer? could we pioneer? could you pioneer? could they pioneer?	could I be pioneering? could you be pioneering? could he be pioneering? could we be pioneering? could you be pioneering? could they be pioneering?
Perfecto	Perfecto con V-ing
could I have pioneered? could you have pioneered? could he have pioneered? could we have pioneered? could you have pioneered? could they have pioneered?	could I have been pioneering? could you have been pioneering? could he have been pioneering? could we have been pioneering? could you have been pioneering? could they have been pioneering?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not pioneer? could you not pioneer? could he not pioneer? could we not pioneer? could you not pioneer? could they not pioneer?	could I not be pioneering? could you not be pioneering? could he not be pioneering? could we not be pioneering? could you not be pioneering? could they not be pioneering?
Perfecto	Perfecto con V-ing
could I not have pioneered? could you not have pioneered? could he not have pioneered? could we not have pioneered? could you not have pioneered? could they not have pioneered?	could I not have been pioneering? could you not have been pioneering? could he not have been pioneering? could we not have been pioneering? could you not have been pioneering? could they not have been pioneering?