Correct

由打

/ yóu dá /
Strokes

Example

As a Preposition

since; from

1
yóu
shàng
上次
bìng
hòu
  
,
shēn
身体
zài
不如
yuánlái
原来
le
  

Since his last illness he has never been the same person.

2
Yóu
hòu
以后

from that time forward; from then on

As a Preposition

through; via; by way of

3
Huáng
黄河
shuǐ
yóu
zhèrwǎng
这儿
běi
  
  
,
zài
xiàng
dōng
hǎi
  

The Yellow River flows north from here, then turns east and empties into the sea.