IndexError

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 ring mail
(1, -12, D:1)
  6 boomerangs
(9, 21, D:1)
  a ball python skeleton
(10, -4, D:1)
  a jackal skeleton
(10, 21, D:1)
  a +0 club
(11, -14, D:1)
  a +0 ring mail
(11, 20, D:1)
  a hobgoblin skeleton
(14, -12, D:1)
  a bat corpse (skeletalised by now)
(18, 10, D:1)
  a +0 robe
(29, 21, D:1)
  a +0 war axe
(30, 18, D:1)
  a +0 whip
(30, 22, D:1)
  a +0 club
(39, 19, D:1)
  a quokka skeleton
(40, 23, D:1)
  a +0 ring mail
(41, -6, D:1)
  a rat corpse (skeletalised by now)
(50, 2, D:1)
  a ball python skeleton
(55, -17, D:1)
  a ball python corpse (skeletalised by now)

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 short sword
  a kobold corpse (skeletalised by now)
(3, -9, D:2)
  a +0 long sword
(19, -28, D:2)
  4 stones
(28, -31, D:2)
  5 stones
(35, -41, D:2)
  a frilled lizard skeleton
(36, -6, D:2)
  3 stones
(38, 4, D:2)
  a +0 dagger
  a stone
  a kobold corpse (skeletalised by now)
(41, -42, D:2)
  a +0 leather armour
(41, -32, D:2)
  a ball python skeleton
(44, -26, D:2)
  5 poisoned darts
(55, -29, D:2)
  a +0 short sword
  a kobold skeleton
(55, -26, D:2)
  an adder corpse (skeletalised by now)
(61, 2, D:2)
  a +0 buckler
(67, -24, D:2)
  a rat corpse (skeletalised by now)
(68, -38, D:2)
  a +0 scale mail

Level 3 of the Dungeon
(0, 0, D:3)
  a +0 leather armour
(6, -13, D:3)
  a hobgoblin skeleton
(11, 11, D:3)
  a +0 hammer
(12, 0, D:3)
  a +0 hammer
(12, 9, D:3)
  a +3 quarterstaff of chaos
  a +1 dagger of freezing
(13, -1, D:3)
  a +0 hammer
(13, 0, D:3)
  a +0 hammer
(13, 2, D:3)
  a +0 hammer
(14, 0, D:3)
  a +0 hammer
(26, 0, D:3)
  a +0 short sword
(29, 6, D:3)
  a +0 dagger
(32, -29, D:3)
  a +0 leather armour
(40, 3, D:3)
  a goblin skeleton
(44, -20, D:3)
  a +0 robe
(44, -16, D:3)
  a bat skeleton
(49, 13, D:3)
  a stone
(55, 14, D:3)
  a +0 robe

Level 4 of the Dungeon
[Shop] Li Ji's Dragon-Slaying Spoils
  +0 steam dragon scales (440 gold)
  the +4 acid dragon scales "Xeleguuv" {+Inv rPois rCorr Str+5} (975 gold)
    +Inv:       It lets you turn invisible.
    rPois:      It protects you from poison.
    rCorr:      It protects you from acid and corrosion.
    Str+5:      It affects your strength (+5).
  the +1 swamp dragon scales "Segie" {Fly rPois Will+} (766 gold)
    Fly:        It grants you flight.
    rPois:      It protects you from poison.
    Will+:      It increases your willpower.
  +2 fire dragon scales (792 gold)
  +0 ice dragon scales (660 gold)
  +1 pearl dragon scales (1153 gold)
  the +5 shadow dragon scales of Ru's Hope {Will+ MP+9 Stlth++++} (1365 gold)
    Will+:      It increases your willpower.
    MP+9:       It affects your magic capacity (+9).
    Stlth++++:  It makes you much more stealthy.
  +1 storm dragon scales (957 gold)
  the +1 golden dragon scales of the Known World {Harm +Inv rPois rF+ rC+ Int+4} (1157 gold)
    Harm:       It increases damage dealt and taken.
    +Inv:       It lets you turn invisible.
    rPois:      It protects you from poison.
    rF+:        It protects you from fire.
    rC+:        It protects you from cold.
    Int+4:      It affects your intelligence (+4).
  the quicksilver dragon scales of the Nine Moons {Rampage rF+ Will+ Slay-6} (660 gold)
    Rampage:    It bestows one free step when moving towards enemies.
    rF+:        It protects you from fire.
    Will+:      It increases your willpower.
    Slay-6:     It affects your accuracy & damage with ranged weapons and melee
    (-6).
(7, 1, D:4)
  a +0 leather armour
(9, 22, D:4)
  a +0 dagger
(17, 27, D:4)
  a +0 club
  a gnoll skeleton
(20, 35, D:4)
  a jackal corpse (skeletalised by now)
(27, 26, D:4)
  a jackal corpse (skeletalised by now)
(28, 26, D:4)
  a +0 spear
(29, 26, D:4)
  a +0 club
  a +0 whip
  a jackal corpse (skeletalised by now)
  a gnoll corpse (skeletalised by now)
(32, 32, D:4)
  a -2 sling {Eunwoo}
(34, 3, D:4)
  4 stones
(39, 5, D:4)
  a ball python skeleton
(40, 38, D:4)
  a +0 dagger
  a kobold skeleton
(40, 39, D:4)
  the +6 short sword of the Undead {heavy, +Blink Str+5}
    +Blink:     It lets you blink.
    Str+5:      It affects your strength (+5).
(44, 27, D:4)
  a +0 club
  a goblin skeleton
(45, 25, D:4)
  a +0 battleaxe
(45, 30, D:4)
  a +0 long sword
(46, 34, D:4)
  a +0 club
(60, 20, D:4)
  a +0 spear
(61, 7, D:4)
  a +0 whip

Level 5 of the Dungeon
(0, 0, D:5)
  a scorpion corpse
(11, 11, D:5)
  a +0 giant club
  an ogre corpse
(13, 8, D:5)
  a hound corpse