21. YolKu groups are connected by a complex kinship system ( " gurruo u " ). 22. They have a matrilineal kinship system , with descent and property passed through the maternal lines. 23. Javanese people, the largest ethnic group in Indonesia, also adopt a bilateral kinship system . 24. The social identity of the children was strongly determined by the tribe's kinship system . 25. These Kinship systems necessitated rules, which had to be policed to ensure their continued survival. 26. The Burmese kinship system identifies and recognizes six generations of direct ancestors, excluding the ego: 27. They have a patrilineal kinship system . 28. They already belonged to Downs'clan among the Creek, who had a matrilineal kinship system . 29. The kinship system used by natives of Ambrym can be modeled by a non-commutative group. 30. Male age grade systems associated with matrilineal kinship systems are found among the Austronesian populations of Taiwan.
