C22212323232133313113313331333132313231333132212132311223112331   >>    C2221232323213331311331333133313231323133313221213231122311233   <<    C22212323232133313113313331333132313231333132212132311223112333   >>      C22212323232133313113313331333132313231333132212132311223112332   >>