I have attempted to revise them to make them clearer.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj|5:nsubj:xsubj	_
2	have	have	AUX	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	3	aux	3:aux	_
3	attempted	attempt	VERB	VBN	Tense=Past|VerbForm=Part	0	root	0:root	_
4	to	to	PART	TO	_	5	mark	5:mark	_
5	revise	revise	VERB	VB	VerbForm=Inf	3	xcomp	3:xcomp	_
6	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	5	obj	5:obj	_
7	to	to	PART	TO	_	8	mark	8:mark	_
8	make	make	VERB	VB	VerbForm=Inf	5	advcl	5:advcl:to	_
9	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	8	obj	8:obj|10:nsubj:xsubj	_
10	clearer	clear	ADJ	JJR	Degree=Cmp	8	xcomp	8:xcomp	SpaceAfter=No
11	.	.	PUNCT	.	_	3	punct	3:punct	_
