Undefined Character (U+1DF09)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𝼉` `𝼉`
UTF-8 Encoding:	`0xF0 0x9D 0xBC 0x89`
UTF-16 Encoding:	`0xD837 0xDF09`
UTF-32 Encoding:	`0x0001DF09`

References