English verb conjugation
COULD RADIOPHONE

Regular verb: radiophone - radiophoned - radiophoned

Affirmation

Simple form	V-ing form
I could radiophone you could radiophone she could radiophone we could radiophone you could radiophone they could radiophone	I could be radiophoning you could be radiophoning she 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 she 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 she 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 couldn't radiophone you couldn't radiophone she couldn't radiophone we couldn't radiophone you couldn't radiophone they couldn't radiophone	I couldn't be radiophoning you couldn't be radiophoning she couldn't be radiophoning we couldn't be radiophoning you couldn't be radiophoning they couldn't be radiophoning
Perfect	V-ing perfect
I couldn't have radiophoned you couldn't have radiophoned she couldn't have radiophoned we couldn't have radiophoned you couldn't have radiophoned they couldn't have radiophoned	I couldn't have been radiophoning you couldn't have been radiophoning she couldn't have been radiophoning we couldn't have been radiophoning you couldn't have been radiophoning they couldn't have been radiophoning

Interrogative form

Simple form	V-ing form
could I radiophone? could you radiophone? could she radiophone? could we radiophone? could you radiophone? could they radiophone?	could I be radiophoning? could you be radiophoning? could she 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 she 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 she 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
couldn't I radiophone? couldn't you radiophone? couldn't she radiophone? couldn't we radiophone? couldn't you radiophone? couldn't they radiophone?	couldn't I be radiophoning? couldn't you be radiophoning? couldn't she be radiophoning? couldn't we be radiophoning? couldn't you be radiophoning? couldn't they be radiophoning?
Perfect	V-ing perfect
couldn't I have radiophoned? couldn't you have radiophoned? couldn't she have radiophoned? couldn't we have radiophoned? couldn't you have radiophoned? couldn't they have radiophoned?	couldn't I have been radiophoning? couldn't you have been radiophoning? couldn't she have been radiophoning? couldn't we have been radiophoning? couldn't you have been radiophoning? couldn't they have been radiophoning?