IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 pair of boots
(2, -6, D:1)
  a +0 whip
  3 stones
(5, -8, D:1)
  a +0 club
(7, -14, D:1)
  a +0 dagger
(14, 5, D:1)
  a +0 dagger
(15, -1, D:1)
  a +0 sling
(19, 15, D:1)
  a +0 club
(26, 9, D:1)
  a +0 short sword
  5 stones
(32, -12, D:1)
  a +0 dagger
(38, -44, D:1)
  a +0 quarterstaff
(49, -25, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 club
(13, 36, D:2)
  a +0 short sword
(18, -4, D:2)
  a +0 dagger
(30, -8, D:2)
  5 stones
(32, 1, D:2)
  a +0 dagger
(33, 19, D:2)
  9 gold pieces
  4 stones
  a +0 club
(34, 15, D:2)
  a +0 whip
(37, 15, D:2)
  a +0 halberd
(38, 15, D:2)
  a +0 whip
(39, 15, D:2)
  a +0 club
(46, 7, D:2)
  5 stones

Level 3 of the Dungeon
(5, -15, D:3)
  4 stones
(13, -2, D:3)
  a +0 falchion
(16, -30, D:3)
  a +0 chain mail
  a +0 ring mail
  a +0 ring mail
  a +0 leather armour
  a +0 ring mail
  a +0 scale mail
  a +0 scale mail
(17, 2, D:3)
  a +0 flail
(29, -2, D:3)
  a +0 spear

Level 4 of the Dungeon
(0, 0, D:4)
  4 stones
(6, -44, D:4)
  7 stones
(8, 10, D:4)
  a +0 dagger
(11, -27, D:4)
  2 stones
  a +0 dagger
(12, -16, D:4)
  a +0 shortbow
(12, -15, D:4)
  a +0 dagger
  a +1 hand axe of freezing
(12, -14, D:4)
  a +0 dagger
(12, -12, D:4)
  a +0 flail
(12, -10, D:4)
  a +0 flail
(15, -23, D:4)
  a +0 club
(19, -27, D:4)
  a potion of resistance
(27, -35, D:4)
  a +0 club
(30, -36, D:4)
  5 large rocks
(30, -33, D:4)
  a +0 dagger
(39, -42, D:4)
  a +0 dagger
(41, -31, D:4)
  a +0 spear
  a +0 club
(42, -42, D:4)
  a +0 dagger
  a +0 leather armour
  an orc corpse
(42, -30, D:4)
  a +0 club
  a +0 club
  a +0 club
(42, -21, D:4)
  a +0 dagger

Level 5 of the Dungeon
(0, 0, D:5)
  4 stones
(5, 8, D:5)
  a +0 war axe
(6, 6, D:5)
  a +0 club
  an orc corpse
(43, -2, D:5)
  a +2 quarterstaff of draining
  (unseen)
(45, -3, D:5)
  a +0 mace
  a +0 leather armour
  an orc corpse