== Pillager outpost
RELEASE 1.14 = 1
RELEASE 1.19 = 2 

== Mineshaft
BETA 1.8 = 1
RELEASE 1.4.6 = 2 
RELEASE 1.6.1 = 3
RELEASE 1.9 = 4
RELEASE 1.17 = 5

== Jungle temple
RELEASE 1.3.1 = 1
RELEASE 1.4.6 = 2 
RELEASE 1.6.1 = 3
RELEASE 1.14 = 4

== Desert pyramid
RELEASE 1.3.1 = 1
RELEASE 1.4.6 = 2
RELEASE 1.6.1 = 3
RELEASE 1.9 = 4

== Stronghold
BETA 1.8 = 1
RELEASE 1.4.6 = 2
RELEASE 1.6.1 = 3
RELEASE 1.9 = 4
RELEASE 1.18 = 5

== Nether fortress
RELEASE 1.6.1 = 1
RELEASE 1.8 = 2
RELEASE 1.9 = 3

== Simple dungeon
ALPHA 1.1.2_02 = 1
BETA 1.7.3 = 2
RELEASE 1.2.5 = 3
RELEASE 1.4.7 = 4
RELEASE 1.6.6 = 5
RELEASE 1.8.9 = 6
RELEASE 1.12.2 = 7

== Fishing
ALPHA 1.2.0 = 1
RELEASE 1.7.2 = 2
RELEASE 1.9 = 3
RELEASE 1.11 = 4
RELEASE 1.13 = 5
RELEASE 1.14 = 6
RELEASE 1.16 = 7

== Bartering
RELEASE 20w07a = 1
RELEASE 20w09a = 2
RELEASE 20w10a = 3
RELEASE 1.16 = 4