Huh? may be a non-prototypical word, but it is a word.
1	Huh	huh	INTJ	UH	_	7	nsubj	7:nsubj	Discourse=adversative-concession:58->59:0|Entity=(49-abstract-giv:inact-cf1-1-coref|SpaceAfter=No|XML=<hi rend:::"italic"></hi>
2	?	?	PUNCT	.	_	1	punct	1:punct	Entity=49)
3	may	may	AUX	MD	VerbForm=Fin	7	aux	7:aux	_
4	be	be	AUX	VB	VerbForm=Inf	7	cop	7:cop	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	7:det	Entity=(49-abstract-giv:act-cf1-3-pred
6	non-prototypical	non-prototypical	ADJ	JJ	Degree=Pos|Polarity=Neg	7	amod	7:amod	_
7	word	word	NOUN	NN	Number=Sing	0	root	0:root	Entity=49)|SpaceAfter=No
8	,	,	PUNCT	,	_	13	punct	13:punct	_
9	but	but	CCONJ	CC	_	13	cc	13:cc	Discourse=restatement-partial:59->52:4
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	13	nsubj	13:nsubj	Entity=(49-abstract-giv:act-cf1-1-ana)
11	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	13:cop	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	13:det	Entity=(49-abstract-giv:act-cf1-2-pred
13	word	word	NOUN	NN	Number=Sing	7	conj	7:conj:but	Entity=49)|SpaceAfter=No
14	.	.	PUNCT	.	_	7	punct	7:punct	_
