2313. What character can be added to both of these characters to give other characters? 非_ -> _干

非  HI - mistake, non-

干  KAN, hi(ru), ho(su) - get dry, dry, drink up

Add 車:非+車 車+干   

車  SHA, kuruma - wheel, vehicle

輩  HAI - fellow, colleague, companion

軒  KEN, noki - counter for buildings, eaves