You have to have two because they don't do well alone.
1	You	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	2	nsubj	2:nsubj|4:nsubj:xsubj	_
2	have	have	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	to	to	PART	TO	_	4	mark	4:mark	_
4	have	have	VERB	VB	VerbForm=Inf	2	xcomp	2:xcomp	_
5	two	two	NUM	CD	NumForm=Word|NumType=Card	4	obj	4:obj	_
6	because	because	SCONJ	IN	_	10	mark	10:mark	_
7	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	10	nsubj	10:nsubj	_
8-9	don't	_	_	_	_	_	_	_	_
8	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	aux	10:aux	_
9	n't	not	PART	RB	_	10	advmod	10:advmod	_
10	do	do	VERB	VB	VerbForm=Inf	4	advcl	4:advcl:because	_
11	well	well	ADV	RB	Degree=Pos	10	advmod	10:advmod	_
12	alone	alone	ADV	RB	_	10	advmod	10:advmod	SpaceAfter=No
13	.	.	PUNCT	.	_	2	punct	2:punct	_
