English verb conjugation
COULD TELPHER

Regular verb: telpher - telphered - telphered

Affirmation

Simple form	V-ing form
I could telpher you could telpher she could telpher we could telpher you could telpher they could telpher	I could be telphering you could be telphering she could be telphering we could be telphering you could be telphering they could be telphering
Perfect	V-ing perfect
I could have telphered you could have telphered she could have telphered we could have telphered you could have telphered they could have telphered	I could have been telphering you could have been telphering she could have been telphering we could have been telphering you could have been telphering they could have been telphering

Negation

Simple form	V-ing form
I couldn't telpher you couldn't telpher she couldn't telpher we couldn't telpher you couldn't telpher they couldn't telpher	I couldn't be telphering you couldn't be telphering she couldn't be telphering we couldn't be telphering you couldn't be telphering they couldn't be telphering
Perfect	V-ing perfect
I couldn't have telphered you couldn't have telphered she couldn't have telphered we couldn't have telphered you couldn't have telphered they couldn't have telphered	I couldn't have been telphering you couldn't have been telphering she couldn't have been telphering we couldn't have been telphering you couldn't have been telphering they couldn't have been telphering

Interrogative form

Simple form	V-ing form
could I telpher? could you telpher? could she telpher? could we telpher? could you telpher? could they telpher?	could I be telphering? could you be telphering? could she be telphering? could we be telphering? could you be telphering? could they be telphering?
Perfect	V-ing perfect
could I have telphered? could you have telphered? could she have telphered? could we have telphered? could you have telphered? could they have telphered?	could I have been telphering? could you have been telphering? could she have been telphering? could we have been telphering? could you have been telphering? could they have been telphering?

Interro-negative form

Simple form	V-ing form
couldn't I telpher? couldn't you telpher? couldn't she telpher? couldn't we telpher? couldn't you telpher? couldn't they telpher?	couldn't I be telphering? couldn't you be telphering? couldn't she be telphering? couldn't we be telphering? couldn't you be telphering? couldn't they be telphering?
Perfect	V-ing perfect
couldn't I have telphered? couldn't you have telphered? couldn't she have telphered? couldn't we have telphered? couldn't you have telphered? couldn't they have telphered?	couldn't I have been telphering? couldn't you have been telphering? couldn't she have been telphering? couldn't we have been telphering? couldn't you have been telphering? couldn't they have been telphering?