To do this, think of various words that begin with / have a lot of a certain vowel.
1	To	to	PART	TO	_	2	mark	2:mark	Discourse=purpose-goal:101->102:2
2	do	do	VERB	VB	VerbForm=Inf	5	advcl	5:advcl:to	_
3	this	this	PRON	DT	Number=Sing|PronType=Dem	2	obj	2:obj	Entity=(136-event-giv:act-cf1*-1-coref)|SpaceAfter=No
4	,	,	PUNCT	,	_	2	punct	2:punct	_
5	think	think	VERB	VB	Mood=Imp|Person=2|VerbForm=Fin	0	root	0:root	Discourse=elaboration-additional:102->100:0
6	of	of	ADP	IN	_	8	case	8:case	_
7	various	various	ADJ	JJ	Degree=Pos	8	amod	8:amod	Entity=(140-abstract-new-cf2-2-coref
8	words	word	NOUN	NNS	Number=Plur	5	obl	5:obl:of|10:nsubj	_
9	that	that	PRON	WDT	PronType=Rel	10	nsubj	8:ref	Discourse=elaboration-attribute:103->102:0
10	begin	begin	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	acl:relcl	8:acl:relcl	_
11	with	with	ADP	IN	_	10	obl	19:case	_
12	/	/	SYM	SYM	_	13	cc	13:cc	_
13	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	10	conj	8:acl:relcl|10:conj:slash	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	15:det	_
15	lot	lot	NOUN	NN	Number=Sing	13	obj	13:obj	_
16	of	of	ADP	IN	_	19	case	19:case	_
17	a	a	DET	DT	Definite=Ind|PronType=Art	19	det	19:det	Entity=(141-abstract-new-cf3-3-sgl
18	certain	certain	ADJ	JJ	Degree=Pos	19	amod	19:amod	_
19	vowel	vowel	NOUN	NN	Number=Sing	15	nmod	10:obl:with|15:nmod	Entity=141)140)|SpaceAfter=No
20	.	.	PUNCT	.	_	5	punct	5:punct	_
