C2221232323213331311331333133313231333132313231333113221322313221   >>    C222123232321333131133133313331323133313231323133311322132231322   <<    C2221232323213331311331333133313231333132313231333113221322313223   >>      C2221232323213331311331333133313231333132313231333113221322313222   >>