C2221232323213331311331333133313231323133313231322213223331221221   >>    C222123232321333131133133313331323132313331323132221322333122122   <<    C2221232323213331311331333133313231323133313231322213223331221223   >>      C2221232323213331311331333133313231323133313231322213223331221222   >>