I'm having trouble understanding your intent... for several reasons, including
- your formatting (put data inside <code> ...</code> tags so we can see what it really looks like)
... and
- Your paired, but (IMO) contradictory statements "Line 2 till Line n can be considered as irrevelant info for now. Line 1 till Line n is called a single "Subscriber loop""
Is the "n" in line n a variable number? Are lines 2- ..n really empty? Do they actually contain headers such as "line 1-", "line 2-"...? If they exist, are the trailing hyphens inconsistent as in what you posted?
Please clarify.
For a shot-in-the-dark, if the "Loop n" header consistently follows an empty "line n", then you have data which is probably susceptible to attack with a regex. And if the line-numbered data is more-or-less the way it looks here, then spliting on commas and combining (concatenating) the first three elements or a regex with captures nto AoAs might be a useful step one.
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