What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)  

What is the pinyin sound you hear?

(a)