IndexError

Level 1 of the Dungeon
(10, -20, D:1)
  a stone
(11, -19, D:1)
  8 stones
(15, -35, D:1)
  a +0 short sword
(16, -32, D:1)
  a +0 club
(27, -2, D:1)
  a +0 dagger
(28, -14, D:1)
  7 stones
(31, -21, D:1)
  a +0 sling
(38, -26, D:1)
  a +0 dagger
(42, -34, D:1)
  a +0 dagger
  3 stones
(42, -24, D:1)
  a +0 dagger
(54, -32, D:1)
  7 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
(10, 22, D:2)
  a +0 whip
(11, 2, D:2)
  a +0 leather armour
(11, 5, D:2)
  a giant cockroach corpse