C1111233131211111211113313331333133313232313331333131133132323221221322321   >>    C111123313121111121111331333133313331323231333133313113313232322122132232   <<    C1111233131211111211113313331333133313232313331333131133132323221221322323   >>      C1111233131211111211113313331333133313232313331333131133132323221221322322   >>