C1111233131211111211113313331333133313331333133313331322331333131133112331211   >>    C111123313121111121111331333133313331333133313331333132233133313113311233121   <<    C1111233131211111211113313331333133313331333133313331322331333131133112331213   >>      C1111233131211111211113313331333133313331333133313331322331333131133112331212   >>