Pan fydd batris yn dechrau pydru, gall y cemegau sydd ynddyn nhw ollwng i'r ddaear, ac achosi llygredd pridd a dŵr.
1	Pan	pan	SCONJ	sconj	_	2	mark	_	_
2	fydd	bod	VERB	verb	Mood=Ind|Mutation=SM|Number=Sing|Person=3|Tense=Fut|VerbForm=Fin	0	root	_	_
3	batris	batri	NOUN	noun	Gender=Masc|Number=Plur	2	nsubj	_	_
4	yn	yn	AUX	impf	_	5	aux	_	_
5	dechrau	dechrau	NOUN	verbnoun	Number=Sing|VerbForm=Vnoun	2	xcomp	_	_
6	pydru	pydru	NOUN	verbnoun	Number=Sing|VerbForm=Vnoun	5	xcomp	_	SpaceAfter=No
7	,	,	PUNCT	punct	_	8	punct	_	_
8	gall	gallu	VERB	verb	Mood=Ind|Number=Sing|Person=3|Tense=Fut|VerbForm=Fin	5	ccomp	_	_
9	y	y	DET	art	_	10	det	_	_
10	cemegau	cemeg	NOUN	noun	Gender=Masc|Number=Plur	8	nsubj	_	_
11	sydd	bod	VERB	verb	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=FinRel	10	acl:relcl	_	_
12-13	ynddyn	_	_	_	_	_	_	_	_
12	yn	yn	ADP	iprep	_	13	case	_	_
13	hwy	hwy	PRON	indep	Number=Plur|Person=3|PronType=Prs	11	obl	_	_
14	nhw	hwy	PRON	indep	Number=Plur|Person=3|PronType=Prs	13	compound:redup	_	_
15	ollwng	gollwng	NOUN	verbnoun	Mutation=SM|Number=Sing|VerbForm=Vnoun	11	obl	_	_
16	i	i	ADP	prep	_	18	case	_	SpaceAfter=No
17	'r	y	DET	art	_	18	det	_	_
18	ddaear	daear	NOUN	noun	Gender=Fem|Mutation=SM|Number=Sing	15	obl	_	SpaceAfter=No
19	,	,	PUNCT	punct	_	21	punct	_	_
20	ac	a	CCONJ	cconj	_	21	cc	_	_
21	achosi	achosi	NOUN	verbnoun	Number=Sing|VerbForm=Vnoun	8	conj	_	_
22	llygredd	llygredd	NOUN	noun	Gender=Masc|Number=Sing	21	obj	_	_
23	pridd	pridd	NOUN	noun	Gender=Masc|Number=Sing	22	nmod	_	_
24	a	a	CCONJ	cconj	_	25	cc	_	_
25	dŵr	dŵr	NOUN	noun	Gender=Masc|Number=Sing	23	conj	_	SpaceAfter=No
26	.	.	PUNCT	punct	_	8	punct	_	SpacesAfter=\n
