C2221232323213331311331333133313231333132313232313123232323313211   >>    C222123232321333131133133313331323133313231323231312323232331321   <<    C2221232323213331311331333133313231333132313232313123232323313213   >>      C2221232323213331311331333133313231333132313232313123232323313212   >>