IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(8, 13, D:1)
  a rat skeleton
(10, 12, D:1)
  a +0 leather armour
(18, 8, D:1)
  a bat skeleton
(20, 10, D:1)
  a hobgoblin skeleton
(26, -3, D:1)
  a +0 dagger
(37, -13, D:1)
  a +0 club
(38, -2, D:1)
  a +0 dagger
(40, 11, D:1)
  a +0 short sword
  5 stones
  a kobold corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a frilled lizard corpse
(3, -2, D:2)
  a +0 dagger
  a kobold corpse
(6, -8, D:2)
  an adder corpse
(7, -1, D:2)
  a +0 dagger
  a goblin corpse
(8, -2, D:2)
  a +0 club
  a +0 club
  a goblin corpse
(10, -2, D:2)
  a +0 dagger
  a goblin corpse
(11, -2, D:2)
  a +0 club
  a +0 sling
  a +0 dagger
  a +0 dagger
  a +0 dagger
  a goblin corpse
  a goblin corpse
(41, 5, D:2)
  12 gold pieces