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