As character names:

U+A67C COMBINING CYRILLIC KAVYKA character (꙼)

As raw characters:

꙼

As a string of HTML entities:

꙼

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 138, hex 0x8A, octal \212, binary 10001010
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 153, hex 0x99, octal \231, binary 10011001
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 188, hex 0xBC, octal \274, binary 10111100
This is continuation byte 3, expecting 0 more.

U+A67C	COMBINING CYRILLIC KAVYKA
	* indicates an alternative reading to part of a word
	x (combining breve - 0306)
	x (combining kavyka above right - 1DF6)
	x (combining kavyka above left - 1DF7)