Yabla Chinese

Yabla video uses of 会首
我 wǒ
想 xiǎng
我 wǒ
会首 huìshǒu
先 xiān
淘汰 táotài
3 3
号 hào
啊 a
为什么 wèishénme
呢 ne
I think I would first eliminate number three. -Why?