Undefined Character (U+13681)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓚁` `𓚁`
UTF-8 Encoding:	`0xF0 0x93 0x9A 0x81`
UTF-16 Encoding:	`0xD80D 0xDE81`
UTF-32 Encoding:	`0x00013681`

References