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3) Sequencing words
Implementing sequencing words and phrases is quite necessary for describing
diagrams or flowcharts as they show a clear transition among steps to make
them easier to follow. Furthermore, they provide writings with better
cohesion.
The most common sequencing words are as follows:
To begin/first/firstly/first of all/second/secondly/
then
/next/after
that/following this/following that/at this
point/subsequently/before/after/thereafter/lastly/finally
These sequencing words are usually put at the beginning of a sentence,

---

followed by a comma. Among these words and phrases, “
then
” is the only
one that can be put between the two parts of a passive verb, and there is no
need to use a “comma” in this case.
For example
Firstly, the raw material is transported to the factory.
Secondly, they are processed in high-temperature ovens.
Subsequently, they are molded.
They are then transported to the warehouse. (“Then” is placed
between the two parts of the passive voice, and no commas are
required in this case.)
Linear diagrams
The following diagram shows steps in producing wine in a small winery.
Summarize the information by reporting the main steps.