C1111233131211111211113313331333133313232321333131333131133132323133313221211   >>    C111123313121111121111331333133313331323232133313133313113313232313331322121   <<    C1111233131211111211113313331333133313232321333131333131133132323133313221213   >>      C1111233131211111211113313331333133313232321333131333131133132323133313221212   >>