C111122332133313231232313231313231323132322331323133311211312121   >>    C11112233213331323123231323131323132313232233132313331121131212   <<    C111122332133313231232313231313231323132322331323133311211312123   >>      C111122332133313231232313231313231323132322331323133311211312122   >>