Not unify to 西.

|⿻丅口| is |西| deleting a stroke, to indicate different pronunciations (si instead of *sei).
|西| is also used in the evidence (page 6, line 4).

Proposed glyph matches with the Evidence 1, but the digital font in the Evidence 2 looks much different. Is there any discussion which glyph is better? I guess UK is not going to encode them separately.

The UK glyph design follows the shape shown in Evidence 1.

If

00033

丨 2.3.2

UK-30601

TS 4 · IDS ㇯由一

is encoded, the IDS may be modified to ⿱一

00033

丨 2.3.2

UK-30601

TS 4 · IDS ㇯由一

.

Provided by Lin Anning (林安玲): 蕈家道,王定才：布依方块古文字,民族出版社, 2020年8月, 第一版, p. 140

For Comment #10598, the first author should be 覃家道.

Bouyei reading: loic

Thank you for the new evidence.