C22212323232133313113313331333132313231333132212132311233322221   >>    C2221232323213331311331333133313231323133313221213231123332222   <<    C22212323232133313113313331333132313231333132212132311233322223   >>      C22212323232133313113313331333132313231333132212132311233322222   >>