English verb conjugation
COULD RADIOPHONE

Regular verb: radiophone - radiophoned - radiophoned

Affirmation

Simple form	V-ing form
I could radiophone you could radiophone he could radiophone we could radiophone you could radiophone they could radiophone	I could be radiophoning you could be radiophoning he could be radiophoning we could be radiophoning you could be radiophoning they could be radiophoning
Perfect	V-ing perfect
I could have radiophoned you could have radiophoned he could have radiophoned we could have radiophoned you could have radiophoned they could have radiophoned	I could have been radiophoning you could have been radiophoning he could have been radiophoning we could have been radiophoning you could have been radiophoning they could have been radiophoning

Negation

Simple form	V-ing form
I could not radiophone you could not radiophone he could not radiophone we could not radiophone you could not radiophone they could not radiophone	I could not be radiophoning you could not be radiophoning he could not be radiophoning we could not be radiophoning you could not be radiophoning they could not be radiophoning
Perfect	V-ing perfect
I could not have radiophoned you could not have radiophoned he could not have radiophoned we could not have radiophoned you could not have radiophoned they could not have radiophoned	I could not have been radiophoning you could not have been radiophoning he could not have been radiophoning we could not have been radiophoning you could not have been radiophoning they could not have been radiophoning

Interrogative form

Simple form	V-ing form
could I radiophone? could you radiophone? could he radiophone? could we radiophone? could you radiophone? could they radiophone?	could I be radiophoning? could you be radiophoning? could he be radiophoning? could we be radiophoning? could you be radiophoning? could they be radiophoning?
Perfect	V-ing perfect
could I have radiophoned? could you have radiophoned? could he have radiophoned? could we have radiophoned? could you have radiophoned? could they have radiophoned?	could I have been radiophoning? could you have been radiophoning? could he have been radiophoning? could we have been radiophoning? could you have been radiophoning? could they have been radiophoning?

Interro-negative form

Simple form	V-ing form
could I not radiophone? could you not radiophone? could he not radiophone? could we not radiophone? could you not radiophone? could they not radiophone?	could I not be radiophoning? could you not be radiophoning? could he not be radiophoning? could we not be radiophoning? could you not be radiophoning? could they not be radiophoning?
Perfect	V-ing perfect
could I not have radiophoned? could you not have radiophoned? could he not have radiophoned? could we not have radiophoned? could you not have radiophoned? could they not have radiophoned?	could I not have been radiophoning? could you not have been radiophoning? could he not have been radiophoning? could we not have been radiophoning? could you not have been radiophoning? could they not have been radiophoning?