What kind of competition system will be adopted in the third stage of the World Cup qualifiers in Asia?

Top 10 is the fourth stage of Asian World Cup qualifiers ~! Divide ten teams into two groups, and each group will play home and away double round robin. Finally, the top two in each group directly advanced to the World Cup finals, and the third place in the two groups played the home and away games. The champion and the fifth place in South America will compete for the last World Cup ticket ~!