IndexError

Level 1 of the Dungeon
(12, 24, D:1)
  a +0 mace
(14, -4, D:1)
  a +0 leather armour
(17, -4, D:1)
  a +0 whip
(19, -7, D:1)
  a +0 chain mail
(20, 5, D:1)
  a +0 club
(25, 23, D:1)
  a +0 short sword
(32, -11, D:1)
  23 stones
(35, 1, D:1)
  a +0 short sword
(35, 18, D:1)
  23 bolts
(36, 21, D:1)
  a +0 leather armour
(40, 29, D:1)
  22 arrows
(53, 4, D:1)
  a +0 club

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 plate armour
(2, 5, D:2)
  a stone
  a +0 short sword
(8, 6, D:2)
  a +0 mace
(15, 11, D:2)
  4 stones
(24, -24, D:2)
  a +0 leather armour
(26, -5, D:2)
  a +0 club
(29, 10, D:2)
  a +0 spear
(47, -33, D:2)
  27 bolts
(60, -17, D:2)
  a +0 leather armour

Level 3 of the Dungeon
(0, 0, D:3)
  27 bolts
(3, -24, D:3)
  a +0 short sword
(3, 1, D:3)
  7 stones
(20, -20, D:3)
  a +0 leather armour
  a +0 flail
(20, -19, D:3)
  a +0 scale mail
  a +0 hand axe
  a +0 robe
  a +0 dagger
  a +0 club
(30, -16, D:3)
  a +0 club
  a +0 chain mail of cold resistance
(37, 3, D:3)
  a +0 dagger
(43, -3, D:3)
  a +0 dagger
  a +0 leather armour

Level 4 of the Dungeon
(0, 0, D:4)
  14 arrows
(0, 16, D:4)
  16 arrows
(3, 24, D:4)
  a +0 club
  a +0 short sword
  a goblin corpse
(4, -6, D:4)
  a +0 dagger
(5, 4, D:4)
  a +0 dagger
(7, -4, D:4)
  a +0 club
(8, -15, D:4)
  a +0 club
  a kobold corpse
(9, 12, D:4)
  a +0 ring mail
(11, 22, D:4)
  a +0 falchion
(12, 25, D:4)
  6 curare-tipped darts
(13, 14, D:4)
  23 bolts
(13, 17, D:4)
  a +0 spear
(15, 34, D:4)
  a +0 dagger
  a goblin corpse (skeletalised by now)
(16, -9, D:4)
  2 atropa-tipped darts
(19, 36, D:4)
  21 arrows
(22, 33, D:4)
  a quokka corpse (skeletalised by now)
  an iguana corpse (skeletalised by now)
(28, 7, D:4)
  15 stones
(28, 21, D:4)
  a +0 giant club
(29, 21, D:4)
  a +0 whip
(33, 3, D:4)
  a +0 leather armour
(36, 0, D:4)
  8 poisoned darts
(41, 9, D:4)
  14 stones