Correct

一个个

/ yīgègè / 
Strokes

Definition

each and every one

Example

As a Noun

each one; every one; one by one

1
Dàjiā
大家
bùyào
不要
yīqǐ
一起
fāyán
发言
  
,
yī
一
gègè
个个
jiǎng
讲
  
。

Don't talk all at once. Speak one by one.