C22212323232133313113313331333132313331312112113232223221312131   >>    C2221232323213331311331333133313231333131211211323222322131213   <<    C22212323232133313113313331333132313331312112113232223221312133   >>      C22212323232133313113313331333132313331312112113232223221312132   >>