C12312213132313231311331313331312323133313231311233132322331323121211   >>    C1231221313231323131133131333131232313331323131123313232233132312121   <<    C12312213132313231311331313331312323133313231311233132322331323121213   >>      C12312213132313231311331313331312323133313231311233132322331323121212   >>