Writing
 

1. 启
first of all
to begin with
2. 承
2.1 further
besides, furthermore, in addition
2.2 explain
in fact
in other words
that means
for example
for instance
2.3 comment
therefore
so
3. 转
nevertheless
however
on the contrary
4. 合
in conclusion
to sum up
5. intra-sentence
but
while
whereas