IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 club
(3, -2, D:1)
  a +0 club
  2 stones
(12, 12, D:1)
  a +2 dagger of venom
(13, -18, D:1)
  5 stones
(14, 4, D:1)
  3 poisoned darts
(16, -12, D:1)
  a +0 dagger
(16, -6, D:1)
  a ring of poison resistance {rPois, !d}
(16, 11, D:1)
  a +0 short sword
(17, 11, D:1)
  a +0 short sword
(19, -27, D:1)
  a +0 sling
(25, -22, D:1)
  a +0 club
(30, -22, D:1)
  a +0 mace
(31, 3, D:1)
  5 stones
(31, 18, D:1)
  a +0 dagger
  2 stones
(32, 25, D:1)
  a +0 dagger
(51, 9, D:1)
  a +0 leather armour
(51, 16, D:1)
  2 stones
(53, -17, D:1)
  a +0 whip
  5 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 ring mail
(3, -12, D:2)
  a +0 club
(4, 19, D:2)
  a +0 robe
(18, 12, D:2)
  a +0 club
(22, 15, D:2)
  a +0 sling
(24, 2, D:2)
  a +0 dagger
(26, 16, D:2)
  a +0 short sword
(29, -9, D:2)
  a +0 scale mail
(33, -22, D:2)
  a +0 robe

Level 3 of the Dungeon
(0, 0, D:3)
  a ball python corpse (skeletalised by now)
(5, -41, D:3)
  a scroll of amnesia
(14, -2, D:3)
  a +0 robe
(20, -1, D:3)
  a ball python corpse
(28, -16, D:3)
  a +0 short sword
(33, -26, D:3)
  a rat corpse
(35, -21, D:3)
  6 gold pieces
(42, -19, D:3)
  a +2 hand axe of freezing
  a +0 leather armour