C22212323232133313113313331333132313231333132212132311222212131   >>    C2221232323213331311331333133313231323133313221213231122221213   <<    C22212323232133313113313331333132313231333132212132311222212133   >>      C22212323232133313113313331333132313231333132212132311222212132   >>