Thank you Google
As Daniel Lindsäth pointed out, SOEGENG is Indonesian.
When you google SOEGENG, you get Sugeng, which reminds me that Indonesian used to be spelled more Dutch than it is now, including using oe.
I also realised that the SOEGENG comes first, the writing forms an arc.
SOEGENG RAWOH IPOEN. Switch the <oe> to <u>, you get SUGENG RAWOH IPUN. Google Translate renders SUGENG RAWUH IPUN as “welcome them”.
For the rest, ask someone who actually knows Indonesian.
EDIT: or Javanese. Thank you, Rizky Wirastomo