C2221232323213331311331333133313231323133313231123312311123221221   >>    C222123232321333131133133313331323132313331323112331231112322122   <<    C2221232323213331311331333133313231323133313231123312311123221223   >>      C2221232323213331311331333133313231323133313231123312311123221222   >>