So, I was creating only one north and one south, rather than that if I am going to have one A here, one A' here, one more A1 here, and one more A1' here.
इसलिए, मैं केवल एक उत्तर और एक दक्षिण बना रहा था, बजाय इसके कि अगर यहां एक A, एक A 'यहां, और एक A1 यहां, और एक औरA1' यहां ।