The excellent windows have performed without any problems, but that's not why I'm writing my review.
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	3:det	_
2	excellent	excellent	ADJ	JJ	Degree=Pos	3	amod	3:amod	_
3	windows	window	NOUN	NNS	Number=Plur	5	nsubj	5:nsubj	_
4	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	aux	5:aux	_
5	performed	perform	VERB	VBN	Tense=Past|VerbForm=Part	0	root	0:root	_
6	without	without	ADP	IN	_	8	case	8:case	_
7	any	any	DET	DT	_	8	det	8:det	_
8	problems	problem	NOUN	NNS	Number=Plur	5	obl	5:obl:without	SpaceAfter=No
9	,	,	PUNCT	,	_	14	punct	14:punct	_
10	but	but	CCONJ	CC	_	14	cc	14:cc	_
11-12	that's	_	_	_	_	_	_	_	_
11	that	that	PRON	DT	Number=Sing|PronType=Dem	14	nsubj	14:nsubj	_
12	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	cop	14:cop	_
13	not	not	PART	RB	_	14	advmod	14:advmod	_
14	why	why	ADV	WRB	PronType=Rel	5	conj	5:conj:but	_
15-16	I'm	_	_	_	_	_	_	_	_
15	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	17	nsubj	17:nsubj	_
16	'm	be	AUX	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	17	aux	17:aux	_
17	writing	write	VERB	VBG	VerbForm=Ger	14	advcl:relcl	14:advcl:relcl	_
18	my	my	PRON	PRP$	Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs	19	nmod:poss	19:nmod:poss	_
19	review	review	NOUN	NN	Number=Sing	17	obj	17:obj	SpaceAfter=No
20	.	.	PUNCT	.	_	5	punct	5:punct	_
