C2221232323213331311331333133313231323133313231123312311123221211   >>    C222123232321333131133133313331323132313331323112331231112322121   <<    C2221232323213331311331333133313231323133313231123312311123221213   >>      C2221232323213331311331333133313231323133313231123312311123221212   >>