Undefined Character (U+AAC4)

Block:	Tai Viet, U+AA80 - U+AADF^[1]
Plane:	Basic Multilingual Plane, U+0000 - U+FFFF^[1]
HTML Entity:	`꫄` `꫄`
UTF-8 Encoding:	`0xEA 0xAB 0x84`
UTF-16 Encoding:	`0xAAC4`
UTF-32 Encoding:	`0x0000AAC4`

References