C2221333133313331311233132313331333133313331333133313331333131311212121   >>    C222133313331333131123313231333133313331333133313331333133313131121212   <<    C2221333133313331311233132313331333133313331333133313331333131311212123   >>      C2221333133313331311233132313331333133313331333133313331333131311212122   >>