Once one had been received, the next ten, mailed on two separate dates, were easily collected.
1	Once	once	SCONJ	IN	_	5	mark	5:mark	_
2	one	one	NUM	CD	NumForm=Word|NumType=Card	5	nsubj:pass	5:nsubj:pass	_
3	had	have	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	5	aux	5:aux	_
4	been	be	AUX	VBN	Tense=Past|VerbForm=Part	5	aux:pass	5:aux:pass	_
5	received	receive	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	19	advcl	19:advcl:once	SpaceAfter=No
6	,	,	PUNCT	,	_	19	punct	19:punct	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	_
8	next	next	ADJ	JJ	Degree=Pos	9	amod	9:amod	_
9	ten	ten	NOUN	NN	Number=Sing	19	nsubj:pass	19:nsubj:pass	SpaceAfter=No
10	,	,	PUNCT	,	_	9	punct	9:punct	_
11	mailed	mail	VERB	VBN	Tense=Past|VerbForm=Part	9	acl	9:acl	_
12	on	on	ADP	IN	_	15	case	15:case	_
13	two	two	NUM	CD	NumForm=Word|NumType=Card	15	nummod	15:nummod	_
14	separate	separate	ADJ	JJ	Degree=Pos	15	amod	15:amod	_
15	dates	date	NOUN	NNS	Number=Plur	11	obl	11:obl:on	SpaceAfter=No
16	,	,	PUNCT	,	_	19	punct	19:punct	_
17	were	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	19	aux:pass	19:aux:pass	_
18	easily	easily	ADV	RB	_	19	advmod	19:advmod	_
19	collected	collect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	SpaceAfter=No
20	.	.	PUNCT	.	_	19	punct	19:punct	_
