IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(3, -6, D:1)
  5 stones
(13, -4, D:1)
  a +0 dagger
(16, 4, D:1)
  a +0 leather armour
(19, 4, D:1)
  a hobgoblin corpse (skeletalised by now)
(32, -7, D:1)
  5 stones
  a +0 club
(33, 20, D:1)
  a +0 robe
(37, -13, D:1)
  a +0 leather armour
(40, 5, D:1)
  a hobgoblin corpse (skeletalised by now)
(40, 6, D:1)
  a ball python skeleton
(40, 23, D:1)
  a rat skeleton
(52, -2, D:1)
  2 stones
(66, 5, D:1)
  a bat corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a rat corpse (skeletalised by now)
(13, -7, D:2)
  an adder corpse
(22, 2, D:2)
  a ribbon worm corpse