C111122332133313231232313231313231323132322331323133311221123232212111   >>    C11112233213331323123231323131323132313232233132313331122112323221211   <<    C111122332133313231232313231313231323132322331323133311221123232212113   >>      C111122332133313231232313231313231323132322331323133311221123232212112   >>