IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a quokka corpse
(1, 0, D:1)
  a rat corpse
(4, 14, D:1)
  a rat corpse
(7, 5, D:1)
  a +0 dagger
  5 stones
(10, -4, D:1)
  a scroll of teleportation
(11, 6, D:1)
  a rat corpse
(13, 20, D:1)
  7 stones
(19, 18, D:1)
  4 boomerangs
(21, 18, D:1)
  a +0 spear
(22, 6, D:1)
  a stone
(30, 1, D:1)
  a +0 ring mail
(33, 12, D:1)
  a +0 trident