D2

1000	B
624	type
619	modified
612	using
610	space
610	either
609	R2
608	complete
606	cycle
606	possible

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next:	D20
random:	Hattaway

More distant neighbors

standard similarly intermediate similar switch point simultaneously model another instead variant each stages reverse Type same side turn indicating thus usual system although conventional identical hence newer however map class However configuration usually Finally end uses albeit set example

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