IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +2 barding
(4, 2, D:1)
  a +0 club
(16, -42, D:1)
  a +0 dagger
(20, -14, D:1)
  Maxwell's Memoranda
(22, -41, D:1)
  a +0 scale mail
(24, -41, D:1)
  a +0 dagger
(33, -24, D:1)
  a book of the Senses
(35, -18, D:1)
  5 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(12, -21, D:2)
  4 stones
(18, -19, D:2)
  a ball python corpse (skeletalised by now)
(21, -4, D:2)
  8 stones
(22, -3, D:2)
  5 stones
(26, -21, D:2)
  a hobgoblin corpse (skeletalised by now)
(34, 4, D:2)
  6 stones
(35, 17, D:2)
  an adder corpse