C22212323232133313113313331333133313113313121223323321331121311   >>    C2221232323213331311331333133313331311331312122332332133112131   <<    C22212323232133313113313331333133313113313121223323321331121313   >>      C22212323232133313113313331333133313113313121223323321331121312   >>