C2221232323213331311331333133313231333132313231333113221312213222211   >>    C222123232321333131133133313331323133313231323133311322131221322221   <<    C2221232323213331311331333133313231333132313231333113221312213222213   >>      C2221232323213331311331333133313231333132313231333113221312213222212   >>