When the Americans swept in with their Search and Destroy operations the Communists quickly leaned they could not stand up to the US firepower, and these regular troops were forced to flee the country and take sanctuary across the borders in Laos and Cambodia.
1	When	when	ADV	WRB	PronType=Int	4	advmod	4:advmod	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	3:det	_
3	Americans	American	PROPN	NNPS	Number=Plur	4	nsubj	4:nsubj	_
4	swept	sweep	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	15	advcl	15:advcl:when	_
5	in	in	ADV	RB	_	4	advmod	4:advmod	_
6	with	with	ADP	IN	_	11	case	11:case	_
7	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	11	nmod:poss	11:nmod:poss	_
8	Search	search	VERB	VB	VerbForm=Inf	11	compound	11:compound	_
9	and	and	CCONJ	CC	_	10	cc	10:cc	_
10	Destroy	destroy	VERB	VB	VerbForm=Inf	8	conj	8:conj:and|11:compound	_
11	operations	operation	NOUN	NNS	Number=Plur	4	obl	4:obl:with	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	13:det	_
13	Communists	Communist	PROPN	NNPS	Number=Plur	15	nsubj	15:nsubj	_
14	quickly	quickly	ADV	RB	_	15	advmod	15:advmod	_
15	leaned	learn	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|Typo=Yes|VerbForm=Fin	0	root	0:root	CorrectForm=learned
16	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	19	nsubj	19:nsubj	_
17	could	could	AUX	MD	VerbForm=Fin	19	aux	19:aux	_
18	not	not	PART	RB	_	19	advmod	19:advmod	_
19	stand	stand	VERB	VB	VerbForm=Inf	15	ccomp	15:ccomp	_
20	up	up	ADP	RP	_	19	compound:prt	19:compound:prt	_
21	to	to	ADP	IN	_	24	case	24:case	_
22	the	the	DET	DT	Definite=Def|PronType=Art	24	det	24:det	_
23	US	US	PROPN	NNP	Number=Sing	24	compound	24:compound	_
24	firepower	firepower	NOUN	NN	Number=Sing	19	obl	19:obl:to	SpaceAfter=No
25	,	,	PUNCT	,	_	31	punct	31:punct	_
26	and	and	CCONJ	CC	_	31	cc	31:cc	_
27	these	this	DET	DT	Number=Plur|PronType=Dem	29	det	29:det	_
28	regular	regular	ADJ	JJ	Degree=Pos	29	amod	29:amod	_
29	troops	troops	NOUN	NNS	Number=Plur	31	nsubj:pass	31:nsubj:pass|33:nsubj:xsubj|37:nsubj:xsubj	_
30	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	31	aux:pass	31:aux:pass	_
31	forced	force	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	conj	15:conj:and	_
32	to	to	PART	TO	_	33	mark	33:mark	_
33	flee	flee	VERB	VB	VerbForm=Inf	31	xcomp	31:xcomp	_
34	the	the	DET	DT	Definite=Def|PronType=Art	35	det	35:det	_
35	country	country	NOUN	NN	Number=Sing	33	obj	33:obj	_
36	and	and	CCONJ	CC	_	37	cc	37:cc	_
37	take	take	VERB	VB	VerbForm=Inf	33	conj	31:xcomp|33:conj:and	_
38	sanctuary	sanctuary	NOUN	NN	Number=Sing	37	obj	37:obj	_
39	across	across	ADP	IN	_	41	case	41:case	_
40	the	the	DET	DT	Definite=Def|PronType=Art	41	det	41:det	_
41	borders	border	NOUN	NNS	Number=Plur	37	obl	37:obl:across	_
42	in	in	ADP	IN	_	43	case	43:case	_
43	Laos	Laos	PROPN	NNP	Number=Sing	37	obl	37:obl:in	_
44	and	and	CCONJ	CC	_	45	cc	45:cc	_
45	Cambodia	Cambodia	PROPN	NNP	Number=Sing	43	conj	37:obl:in|43:conj:and	SpaceAfter=No
46	.	.	PUNCT	.	_	15	punct	15:punct	_
