IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 hunting sling
(39, -7, D:1)
  a +0 dagger
  2 stones
(41, 22, D:1)
  13 stones
(45, 17, D:1)
  a +0 hunting sling
(47, 23, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 chain mail
(2, 11, D:2)
  2 potions of attraction
(3, 4, D:2)
  11 stones
(5, -6, D:2)
  a rat corpse
(13, -3, D:2)
  2 potions of attraction