IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 sling
(1, 1, D:1)
  4 stones
(4, 2, D:1)
  a rat skeleton
(5, 10, D:1)
  a +0 hand axe
(11, 1, D:1)
  a +0 dagger
  a goblin skeleton
(12, -9, D:1)
  a jackal skeleton
(12, -8, D:1)
  a jackal skeleton
(15, -11, D:1)
  a +0 dagger
  a goblin skeleton
(19, 14, D:1)
  a quokka skeleton
(20, 0, D:1)
  a bat skeleton
(26, 22, D:1)
  a +0 dagger
(33, -3, D:1)
  a +0 scale mail
(36, 31, D:1)
  a +0 club
(39, 17, D:1)
  8 stones
(42, -9, D:1)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(42, -7, D:1)
  a jackal corpse (skeletalised by now)
(42, 13, D:1)
  a frilled lizard skeleton
(43, -11, D:1)
  a rat corpse (skeletalised by now)
(43, -9, D:1)
  a +0 dagger
  a kobold corpse (skeletalised by now)
(47, 5, D:1)
  a rat skeleton
(58, -3, D:1)
  a +0 club

Level 2 of the Dungeon
(0, 0, D:2)
  a flux talisman
(25, 2, D:2)
  a +0 sling
  a +0 sling