Where does “[[uwa]], [[uha]], [[ūha]]” come from?

[[uwa]], [[uha]], [[ūha]] (Old Javanese) comes from Sanskrit ऊह, from Sanskrit अहह.

Ancestry of “[[uwa]], [[uha]], [[ūha]]”, step by step

Step	Language	Word	Meaning
1	Sanskrit	ऊह	removing, derangement, transposition, change,...
2	Sanskrit	अहह	—