Correct

一差二错

/ yī chā èr cuò / 
Strokes

Example

Definition

mistake or mishap

1
Tā
他
yàoshi
要是
yǒu
有
gè
个
yī
一
chā
差
èr
二
cuò
错
  
,
shuí
谁
fùzé
负责
  
?

If anything happens to him, who will take the blame? / What if something should go wrong with him?