i usually put my own natural rock over the UTH and they are perfectly fine.
1	i	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj	_
2	usually	usually	ADV	RB	_	3	advmod	3:advmod	_
3	put	put	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	0:root	_
4	my	my	PRON	PRP$	Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs	7	nmod:poss	7:nmod:poss	_
5	own	own	ADJ	JJ	Degree=Pos	7	amod	7:amod	_
6	natural	natural	ADJ	JJ	Degree=Pos	7	amod	7:amod	_
7	rock	rock	NOUN	NN	Number=Sing	3	obj	3:obj	_
8	over	over	ADP	IN	_	10	case	10:case	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	10:det	_
10	UTH	uth	NOUN	NN	Number=Sing	3	obl	3:obl:over	_
11	and	and	CCONJ	CC	_	15	cc	15:cc	_
12	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	15	nsubj	15:nsubj	_
13	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	15	cop	15:cop	_
14	perfectly	perfectly	ADV	RB	_	15	advmod	15:advmod	_
15	fine	fine	ADJ	JJ	Degree=Pos	3	conj	3:conj:and	SpaceAfter=No
16	.	.	PUNCT	.	_	3	punct	3:punct	_
