NPCs composing that spawngroup :

a_dwarven_slave (50%)

a_dwarven_slave (50%)

NPCs spawning around that spawngroup :
(Max range : 100)

crushbone_1, range=76 (3,387,-14)

crushbone_7, range=33 (103,398,-15)

crushbone_51, range=41 (67,415,-12)

orc_slaver (33%)
orc_slaver (33%)
orc_slaver (34%)

crushbone_54, range=64 (42,428,-12)

orc_slaver (50%)
orc_slaver (50%)

crushbone_74, range=66 (107,435,-13)

Orc_Warden (100%)