C22212323232133313113313331333132313231333132212132311313222311   >>    C2221232323213331311331333133313231323133313221213231131322231   <<    C22212323232133313113313331333132313231333132212132311313222313   >>      C22212323232133313113313331333132313231333132212132311313222312   >>