49. Ayu + bhadvitīhaṃ + se
Ubhadvitīhi avayavavuttīhi ayo hoti .
Ubho aṃsā assa ubhayaṃ , dvayaṃ , tayaṃ .
Aṃsasambandhena samudāye vidhi hotīti na ubhayādito bahuvacananti ce ,‘‘ rāhuno siro ’’ tyādo abhedepi bhedavivakkhāya labbhamānato bahuvacanaṃ hoteva .