IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 ring mail
(1, 44, D:1)
  a ball python corpse (skeletalised by now)
(2, -8, D:1)
  a bat skeleton
(4, -8, D:1)
  a +0 club
  a goblin skeleton
(4, 3, D:1)
  a +0 dagger
(6, 14, D:1)
  a ball python skeleton
(7, 14, D:1)
  5 poisoned darts
(8, 24, D:1)
  a +0 robe
(12, 43, D:1)
  a +0 dagger
  a kobold corpse (skeletalised by now)
(17, 14, D:1)
  9 stones
(19, 37, D:1)
  a ball python corpse
(23, 23, D:1)
  a frilled lizard corpse
(24, 25, D:1)
  a frilled lizard corpse
(24, 33, D:1)
  a ball python corpse (skeletalised by now)
(26, 13, D:1)
  a +0 leather armour
(27, -6, D:1)
  a +0 scale mail
(28, -14, D:1)
  a frilled lizard skeleton
(28, -13, D:1)
  a +0 club
  a +0 leather armour
(29, -18, D:1)
  a +0 leather armour
(29, -12, D:1)
  a +0 dagger
(30, 35, D:1)
  a +0 dagger
  5 stones
  a kobold corpse (skeletalised by now)
(32, 6, D:1)
  6 poisoned darts

Level 2 of the Dungeon
(0, 0, D:2)
  4 stones
(5, -2, D:2)
  a scroll of blinking
(5, 4, D:2)
  a staff of alchemy
  (unseen)