It would have been too painful to watch.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	6	nsubj	6:nsubj	_
2	would	would	AUX	MD	VerbForm=Fin	6	aux	6:aux	_
3	have	have	AUX	VB	VerbForm=Inf	6	aux	6:aux	_
4	been	be	AUX	VBN	Tense=Past|VerbForm=Part	6	cop	6:cop	_
5	too	too	ADV	RB	_	6	advmod	6:advmod	_
6	painful	painful	ADJ	JJ	Degree=Pos	0	root	0:root	_
7	to	to	PART	TO	_	8	mark	8:mark	_
8	watch	watch	VERB	VB	VerbForm=Inf	6	advcl	6:advcl:to	SpaceAfter=No
9	.	.	PUNCT	.	_	6	punct	6:punct	_
