He could forget about the case, get back to his routine, write another book.
1	He	he	PRON	PERS-P3SG-NOM	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	could	could	AUX	PAST-AUX	VerbForm=Fin	3	aux	_	_
3	forget	forget	VERB	INF	VerbForm=Inf	0	root	_	_
4	about	about	ADP	_	_	6	case	_	_
5	the	the	DET	DEF	Definite=Def|PronType=Art	6	det	_	_
6	case	case	NOUN	SG-NOM	Number=Sing	3	obl	_	SpaceAfter=No
7	,	,	PUNCT	Comma	_	8	punct	_	_
8	get	get	VERB	INF	VerbForm=Inf	3	conj	_	_
9	back	back	ADV	_	_	8	advmod	_	_
10	to	to	ADP	_	_	12	case	_	_
11	his	he	PRON	P3SG-GEN	Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	12	nmod:poss	_	_
12	routine	routine	NOUN	SG-NOM	Number=Sing	8	obl	_	SpaceAfter=No
13	,	,	PUNCT	Comma	_	14	punct	_	_
14	write	write	VERB	INF	VerbForm=Inf	3	conj	_	_
15	another	another	ADJ	ADJ-SG	_	16	amod	_	_
16	book	book	NOUN	SG-NOM	Number=Sing	14	obj	_	SpaceAfter=No
17	.	.	PUNCT	Period	_	3	punct	_	_
