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