C2221232323213331311331333133313231323133313221213231311113223221   >>    C222123232321333131133133313331323132313331322121323131111322322   <<    C2221232323213331311331333133313231323133313221213231311113223223   >>      C2221232323213331311331333133313231323133313221213231311113223222   >>