Conjugación del verbo inglés
COULD CONTEND

Verbo regular: contend - contended - contended

Afirmación

Forma simple	Forma con V-ing
I could contend you could contend he could contend we could contend you could contend they could contend	I could be contending you could be contending he could be contending we could be contending you could be contending they could be contending
Perfecto	Perfecto con V-ing
I could have contended you could have contended he could have contended we could have contended you could have contended they could have contended	I could have been contending you could have been contending he could have been contending we could have been contending you could have been contending they could have been contending

Negación

Forma simple	Forma con V-ing
I could not contend you could not contend he could not contend we could not contend you could not contend they could not contend	I could not be contending you could not be contending he could not be contending we could not be contending you could not be contending they could not be contending
Perfecto	Perfecto con V-ing
I could not have contended you could not have contended he could not have contended we could not have contended you could not have contended they could not have contended	I could not have been contending you could not have been contending he could not have been contending we could not have been contending you could not have been contending they could not have been contending

Forma interrogativa

Forma simple	Forma con V-ing
could I contend? could you contend? could he contend? could we contend? could you contend? could they contend?	could I be contending? could you be contending? could he be contending? could we be contending? could you be contending? could they be contending?
Perfecto	Perfecto con V-ing
could I have contended? could you have contended? could he have contended? could we have contended? could you have contended? could they have contended?	could I have been contending? could you have been contending? could he have been contending? could we have been contending? could you have been contending? could they have been contending?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not contend? could you not contend? could he not contend? could we not contend? could you not contend? could they not contend?	could I not be contending? could you not be contending? could he not be contending? could we not be contending? could you not be contending? could they not be contending?
Perfecto	Perfecto con V-ing
could I not have contended? could you not have contended? could he not have contended? could we not have contended? could you not have contended? could they not have contended?	could I not have been contending? could you not have been contending? could he not have been contending? could we not have been contending? could you not have been contending? could they not have been contending?