C22212323232133313113313331333132313331323132213231312131123313121   >>    C2221232323213331311331333133313231333132313221323131213112331312   <<    C22212323232133313113313331333132313331323132213231312131123313123   >>      C22212323232133313113313331333132313331323132213231312131123313122   >>