Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could panneer you could panneer he could panneer we could panneer you could panneer they could panneer
V-ing form
I could be panneering you could be panneering he could be panneering we could be panneering you could be panneering they could be panneering
Perfect
I could have panneered you could have panneered he could have panneered we could have panneered you could have panneered they could have panneered
V-ing perfect
I could have been panneering you could have been panneering he could have been panneering we could have been panneering you could have been panneering they could have been panneering
Negation
Simple form
I could not panneer you could not panneer he could not panneer we could not panneer you could not panneer they could not panneer
V-ing form
I could not be panneering you could not be panneering he could not be panneering we could not be panneering you could not be panneering they could not be panneering
Perfect
I could not have panneered you could not have panneered he could not have panneered we could not have panneered you could not have panneered they could not have panneered
V-ing perfect
I could not have been panneering you could not have been panneering he could not have been panneering we could not have been panneering you could not have been panneering they could not have been panneering
Interrogative form
Simple form
could I panneer? could you panneer? could he panneer? could we panneer? could you panneer? could they panneer?
V-ing form
could I be panneering? could you be panneering? could he be panneering? could we be panneering? could you be panneering? could they be panneering?
Perfect
could I have panneered? could you have panneered? could he have panneered? could we have panneered? could you have panneered? could they have panneered?
V-ing perfect
could I have been panneering? could you have been panneering? could he have been panneering? could we have been panneering? could you have been panneering? could they have been panneering?
Interro-negative form
Simple form
could I not panneer? could you not panneer? could he not panneer? could we not panneer? could you not panneer? could they not panneer?
V-ing form
could I not be panneering? could you not be panneering? could he not be panneering? could we not be panneering? could you not be panneering? could they not be panneering?
Perfect
could I not have panneered? could you not have panneered? could he not have panneered? could we not have panneered? could you not have panneered? could they not have panneered?
V-ing perfect
could I not have been panneering? could you not have been panneering? could he not have been panneering? could we not have been panneering? could you not have been panneering? could they not have been panneering?