list[tana_purpose]tana_definition definition Tāna involves omission of svaras and establishes a specific pattern in ascent; tānas have yajña-nametana_definition_cyclic_permutations definition Tāna is a svara-aggregate formed by cyclic permutations following ascending and descending order.tana_vs_murchana_distinction_open relation Tāna is distinct from mūrchanā, though the precise distinction is debated.enumeration