C2221232323213331311331333133313231323133313231322213322113123111   >>    C222123232321333131133133313331323132313331323132221332211312311   <<    C2221232323213331311331333133313231323133313231322213322113123113   >>      C2221232323213331311331333133313231323133313231322213322113123112   >>