Great work brother, jazakallah khayr for all your effort. It is also worth noting that some scholars are of the opinion that ayah 20 was revealed in Medina, suggesting that there was a 'gap' in the ring structure that was only fulfilled after the hijrah. One would struggle to explain why or how a human author would intentionally leave an incomplete chiastic structure for so many years in such an early surah, so this can definitely be a sign of the Qur'an's divine origin, and Allah knows best.
Great work brother, jazakallah khayr for all your effort. It is also worth noting that some scholars are of the opinion that ayah 20 was revealed in Medina, suggesting that there was a 'gap' in the ring structure that was only fulfilled after the hijrah. One would struggle to explain why or how a human author would intentionally leave an incomplete chiastic structure for so many years in such an early surah, so this can definitely be a sign of the Qur'an's divine origin, and Allah knows best.