C2221232323213331311331333133313231333132313231333113221213311231   >>    C222123232321333131133133313331323133313231323133311322121331123   <<    C2221232323213331311331333133313231333132313231333113221213311233   >>      C2221232323213331311331333133313231333132313231333113221213311232   >>