Undefined Character (U+13666)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓙦` `𓙦`
UTF-8 Encoding:	`0xF0 0x93 0x99 0xA6`
UTF-16 Encoding:	`0xD80D 0xDE66`
UTF-32 Encoding:	`0x00013666`

References