C2221333133313331311233132313331333133313331311233132233131322121   >>    C222133313331333131123313231333133313331333131123313223313132212   <<    C2221333133313331311233132313331333133313331311233132233131322123   >>      C2221333133313331311233132313331333133313331311233132233131322122   >>