Conjugación del verbo inglés
COULD RADIOGRAPH

Verbo regular: radiograph - radiographed - radiographed

Afirmación

Forma simple	Forma con V-ing
I could radiograph you could radiograph he could radiograph we could radiograph you could radiograph they could radiograph	I could be radiographing you could be radiographing he could be radiographing we could be radiographing you could be radiographing they could be radiographing
Perfecto	Perfecto con V-ing
I could have radiographed you could have radiographed he could have radiographed we could have radiographed you could have radiographed they could have radiographed	I could have been radiographing you could have been radiographing he could have been radiographing we could have been radiographing you could have been radiographing they could have been radiographing

Negación

Forma simple	Forma con V-ing
I could not radiograph you could not radiograph he could not radiograph we could not radiograph you could not radiograph they could not radiograph	I could not be radiographing you could not be radiographing he could not be radiographing we could not be radiographing you could not be radiographing they could not be radiographing
Perfecto	Perfecto con V-ing
I could not have radiographed you could not have radiographed he could not have radiographed we could not have radiographed you could not have radiographed they could not have radiographed	I could not have been radiographing you could not have been radiographing he could not have been radiographing we could not have been radiographing you could not have been radiographing they could not have been radiographing

Forma interrogativa

Forma simple	Forma con V-ing
could I radiograph? could you radiograph? could he radiograph? could we radiograph? could you radiograph? could they radiograph?	could I be radiographing? could you be radiographing? could he be radiographing? could we be radiographing? could you be radiographing? could they be radiographing?
Perfecto	Perfecto con V-ing
could I have radiographed? could you have radiographed? could he have radiographed? could we have radiographed? could you have radiographed? could they have radiographed?	could I have been radiographing? could you have been radiographing? could he have been radiographing? could we have been radiographing? could you have been radiographing? could they have been radiographing?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not radiograph? could you not radiograph? could he not radiograph? could we not radiograph? could you not radiograph? could they not radiograph?	could I not be radiographing? could you not be radiographing? could he not be radiographing? could we not be radiographing? could you not be radiographing? could they not be radiographing?
Perfecto	Perfecto con V-ing
could I not have radiographed? could you not have radiographed? could he not have radiographed? could we not have radiographed? could you not have radiographed? could they not have radiographed?	could I not have been radiographing? could you not have been radiographing? could he not have been radiographing? could we not have been radiographing? could you not have been radiographing? could they not have been radiographing?