Undefined Character (U+1E288)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𞊈` `𞊈`
UTF-8 Encoding:	`0xF0 0x9E 0x8A 0x88`
UTF-16 Encoding:	`0xD838 0xDE88`
UTF-32 Encoding:	`0x0001E288`

References