Hrādamāna is an alaṅkāra formed by descent from tāra with one-svara gap, three repetitions, three kalās; pattern: sadha-sadha-sadha, nipa-nipa-nipa, dhama-dhama-dhama, paga-paga-paga, mari-mari-mari, gasa-gasa-gasa
Body (pseudocode)
DEFINE hradamana AS descent(tara, gap=1) WHERE repetitions=3 AND kalas=3 AND form=dvikala