Undefined Character (U+1E666)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𞙦` `𞙦`
UTF-8 Encoding:	`0xF0 0x9E 0x99 0xA6`
UTF-16 Encoding:	`0xD839 0xDE66`
UTF-32 Encoding:	`0x0001E666`

References