C2221232323213331311331333133313231323133313221213231123213112121   >>    C222123232321333131133133313331323132313331322121323112321311212   <<    C2221232323213331311331333133313231323133313221213231123213112123   >>      C2221232323213331311331333133313231323133313221213231123213112122   >>