Where does “dalamkan” come from?

dalamkan (Indonesian) comes from Indonesian dalam, from Malay dalam, from Javanese ꦢꦊꦩ꧀, from Old Javanese dalem, from Proto-Malayo-Polynesian daləm, from Proto-Austronesian daləm — inside; deep.

Ancestry of “dalamkan”, step by step

Step	Language	Word	Meaning
1	Indonesian	dalam	deep; inside, indoors; interior
2	Malay	dalam	deep; inside, in, within; indoor
3	Javanese	ꦢꦊꦩ꧀	in, inside, within
4	Old Javanese	dalem	interior inner part
5	Proto-Malayo-Polynesian	daləm	inside; deep
6	Proto-Austronesian	daləm	inside; deep

Every word from Proto-Austronesian daləm →Every word from Proto-Malayo-Polynesian daləm →Every word from Old Javanese dalem →