C2221333133313331311233132313331333133313232123313331323133313311232113121   >>    C222133313331333131123313231333133313331323212331333132313331331123211312   <<    C2221333133313331311233132313331333133313232123313331323133313311232113123   >>      C2221333133313331311233132313331333133313232123313331323133313311232113122   >>