Undefined Character (U+10DE9)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𐷩` `𐷩`
UTF-8 Encoding:	`0xF0 0x90 0xB7 0xA9`
UTF-16 Encoding:	`0xD803 0xDDE9`
UTF-32 Encoding:	`0x00010DE9`

References