Undefined Character (U+A639)

Block:	Vai, U+A500 - U+A63F^[1]
Plane:	Basic Multilingual Plane, U+0000 - U+FFFF^[1]
HTML Entity:	`꘹` `꘹`
UTF-8 Encoding:	`0xEA 0x98 0xB9`
UTF-16 Encoding:	`0xA639`
UTF-32 Encoding:	`0x0000A639`

References