There are many different ways of playing Quidditch, but the most commonly used set of rules are those given by the International Quidditch Association (which can be found here).
1	There	there	PRON	EX	PronType=Dem	2	expl	2:expl	Discourse=context-background:7->16:4
2	are	be	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	many	many	ADJ	JJ	Degree=Pos	5	amod	5:amod	Entity=(9-abstract-new-cf5-3-sgl
4	different	different	ADJ	JJ	Degree=Pos	5	amod	5:amod	_
5	ways	way	NOUN	NNS	Number=Plur	2	nsubj	2:nsubj	_
6	of	of	SCONJ	IN	_	7	mark	7:mark	_
7	playing	play	VERB	VBG	VerbForm=Ger	5	acl	5:acl:of	_
8	Quidditch	Quidditch	PROPN	NNP	Number=Sing	7	obj	7:obj	Entity=(6-abstract-giv:inact-cf2-1-coref-Quidditch)9)|SpaceAfter=No
9	,	,	PUNCT	,	_	19	punct	19:punct	_
10	but	but	CCONJ	CC	_	19	cc	19:cc	Discourse=adversative-concession:8->7:0
11	the	the	DET	DT	Definite=Def|PronType=Art	15	det	15:det	Entity=(10-abstract-new-cf1-5-coref
12	most	most	ADV	RBS	Degree=Sup	13	advmod	13:advmod	_
13	commonly	commonly	ADV	RB	Degree=Pos	14	advmod	14:advmod	_
14	used	use	VERB	VBN	Tense=Past|VerbForm=Part	15	amod	15:amod	_
15	set	set	NOUN	NN	Number=Sing	19	nsubj	19:nsubj	_
16	of	of	ADP	IN	_	17	case	17:case	_
17	rules	rule	NOUN	NNS	Number=Plur	15	nmod	15:nmod:of	Entity=(11-abstract-new-cf7-1-sgl)10)
18	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	19	cop	19:cop	_
19	those	that	PRON	DT	Number=Plur|PronType=Dem	2	conj	2:conj:but|30:nsubj:pass	Entity=(10-abstract-giv:act-cf1-1,5,6-ana
20	given	give	VERB	VBN	Tense=Past|VerbForm=Part	19	acl	19:acl	Discourse=elaboration-attribute:9->8:0
21	by	by	ADP	IN	_	25	case	25:case	_
22	the	the	DET	DT	Definite=Def|PronType=Art	25	det	25:det	Entity=(12-organization-new-cf6-2,3,4-coref-International_Quidditch_Association
23	International	International	ADJ	NNP	Degree=Pos|Number=Sing	25	amod	25:amod	_
24	Quidditch	Quidditch	PROPN	NNP	Number=Sing	25	compound	25:compound	Entity=(1-abstract-giv:inact-cf3-1-coref-Quidditch_%28real%2Dlife_sport%29)
25	Association	Association	PROPN	NNP	Number=Sing	20	obl:agent	20:obl:agent	Entity=12)
26	(	(	PUNCT	-LRB-	_	30	punct	30:punct	Discourse=elaboration-attribute:10->8:1|SpaceAfter=No
27	which	which	PRON	WDT	PronType=Rel	30	nsubj:pass	19:ref	_
28	can	can	AUX	MD	VerbForm=Fin	30	aux	30:aux	_
29	be	be	AUX	VB	VerbForm=Inf	30	aux:pass	30:aux:pass	_
30	found	find	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	19	acl:relcl	19:acl:relcl	_
31	here	here	ADV	RB	PronType=Dem	30	advmod	30:advmod	Entity=(13-place-acc:com-cf4-1-sgl)|SpaceAfter=No|XML=<ref></ref>
32	)	)	PUNCT	-RRB-	_	30	punct	30:punct	Entity=10)|SpaceAfter=No
33	.	.	PUNCT	.	_	2	punct	2:punct	_
