He would often work for fifteen hours or more at a stretch;
1	He	he	PRON	PE	Gender=Masc|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	would	will	AUX	VM	Mood=Ind|Person=3|Tense=Past|VerbForm=Fin	4	aux	_	_
3	often	often	ADV	B	_	4	advmod	_	_
4	work	work	VERB	V	VerbForm=Inf	0	root	_	_
5	for	for	ADP	E	_	7	case	_	_
6	fifteen	fifteen	NUM	N	NumType=Card	7	nummod	_	_
7	hours	hour	NOUN	S	Number=Plur	4	obl	_	_
8	or	or	CCONJ	CC	_	9	cc	_	_
9	more	more	ADV	B	Degree=Cmp	7	conj	_	_
10	at	at	ADP	E	_	12	case	_	_
11	a	a	DET	RI	Definite=Ind|Number=Sing|PronType=Art	12	det	_	_
12	stretch	stretch	NOUN	S	Number=Sing	4	obl	_	SpaceAfter=No
13	;	;	PUNCT	FC	_	4	punct	_	_
