Where does “残念だが当然” come from?

残念だが当然 (Japanese) comes from Japanese だが, from Japanese だ, from Japanese である, from Japanese で, from Japanese ぜ, from Japanese ぞえ, from Japanese え, from Middle Chinese 衣.

残念だが当然 (Japanese): the result is bad, but it's inevitable

Definitions

the result is bad, but it's inevitable

Ancestry of “残念だが当然”, step by step

残念だが当然 traces back through 3 separate lines of ancestry.

via Japanese だが

Step	Language	Word	Meaning
1	Japanese	だが	though, although, however, but, be that as it...
2	Japanese	だ	Following parts of speech that do not inflect by...
3	Japanese	である	To be: the copula, with the same function as だ and its polite form です
4	Japanese	で	at; with, by, using; indicating the following...
5	Japanese	ぜ	sentence-ending particle signifying emphasis,...
6	Japanese	ぞえ	sentence-ending particle signifying emphasis, used to lightly press one's point, with affectionate overtones
7	Japanese	え	Alternative form of い
8	Middle Chinese	衣	—

via Japanese 残念

Step	Language	Word	Meaning
1	Japanese	残念	regretful; regret
2	Japanese	残	the remainder; leftover; residue

via Japanese 当然

Step	Language	Word	Meaning
1	Japanese	当然	natural, inevitable

Every word from Middle Chinese 衣 →Every word from Japanese え →Every word from Japanese ぞえ →