U+1D3FF: INVALID CHARACTER

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IndexU+1D3FF (119807)
ClassUnassigned (Cn)
Java Escape"\ud834\udfff"
Javascript Escape"\ud834\udfff"
Python Escapeu'\U0001d3ff'
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URL Encodedq=%F0%9D%8F%BF
UTF8f0 9d 8f bf
UTF16d834 dfff