Why then did I trouble the surface?
1	Why	why	ADV	WH	PronType=Int	5	advmod	_	_
2	then	then	ADV	_	PronType=Dem	5	advmod	_	_
3	did	do	AUX	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	5	aux	_	_
4	I	I	PRON	PERS-P1SG-NOM	Case=Nom|Number=Sing|Person=1|PronType=Prs	5	nsubj	_	_
5	trouble	trouble	VERB	INF-ACT	Mood=Ind|VerbForm=Inf	0	root	_	_
6	the	the	DET	DEF	Definite=Def|PronType=Art	7	det	_	_
7	surface	surface	NOUN	SG-NOM	Number=Sing	5	obj	_	SpaceAfter=No
8	?	?	PUNCT	QuestionMark	_	5	punct	_	_
