$unicode5.2:Other_ID_Start
[\u2118\u212E\u309B-\u309C]
[\x{2118}\x{212E}\x{309B}-\x{309C}]
Test a string: Show
Compare with: Show
Complemetary
[Notes]
The set definition is contained in sets.json data file.
sets.json
U+2118
U+212E
U+309B
U+309C