Undefined Character (U+13F88)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓾈` `𓾈`
UTF-8 Encoding:	`0xF0 0x93 0xBE 0x88`
UTF-16 Encoding:	`0xD80F 0xDF88`
UTF-32 Encoding:	`0x00013F88`

References