As character names:

U+0309 COMBINING HOOK ABOVE character (̉)

As raw characters:

̉

As a string of HTML entities:

̉

Decoder output:

Byte number 1 is decimal 204, hex 0xCC, octal \314, binary 11001100
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 137, hex 0x89, octal \211, binary 10001001
This is continuation byte 1, expecting 0 more.

U+0309	COMBINING HOOK ABOVE
	= hoi
	* kerns left or right of circumflex over vowels
	* Vietnamese tone mark
	x (modifier letter glottal stop - 02C0)