R_mulabhasha_class
Mūlabhāṣā = root/foundational bhāṣā: complete (sampūrṇa) with aṁśa=concluding_note; pañcamī, ṣaḍja-bhāṣā, gāndhārī are instances; sung in deity worship
Body (pseudocode)
DEFINE class(mūlabhāṣā): predicate = sampūrṇa AND aṁśa == concluding_note; instances ⊇ {pañcamī(aṁśa=pañcama), ṣaḍja-bhāṣā(hexatonic, dhaivata=initial+concluding, sparse_ṣaḍja), gāndhārī(under bhinna-ṣaḍja)}; viniyoga = deity_worship