English verb conjugation
COULD TELPHER

Regular verb: telpher - telphered - telphered

Affirmation

Simple form	V-ing form
I could telpher you could telpher he could telpher we could telpher you could telpher they could telpher	I could be telphering you could be telphering he 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 he 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 he 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 he 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 he 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 he 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 he 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 he telpher? could we telpher? could you telpher? could they telpher?	could I be telphering? could you be telphering? could he 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 he 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 he 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 he 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 he 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 he 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 he have been telphering? couldn't we have been telphering? couldn't you have been telphering? couldn't they have been telphering?