abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_
11111111111111111111111111111.111.1.....1.11.1111.111

Z	typedef
o	join
l	printf
j	return
H	void
F	char
G	const char
W	kStart
t	kGoal
_	string
V	buffer
i	int
C	x
T	y
O	t
R	dx
I	dy
Q	u0
U	v0
E	block_type
B	Node
r	start
s	neighbor
n	node_queue
m	seen_nodes
e	Cell
f	Corner
g	VerticalEdge
h	OutputSolution
w	AddAndSwap
x	AddAndSwap1

	Node:
c	Swap
d	Get
p	GetType
q	Goal
D	GetFingerprint
b	parent_
A	cell_

	local:
v	parent
k	x0
a	y0
z	dx
u	dy
u	u
v	v
y	tmp
v	node
k	x1
a	y1
z	dx1
u	dy1
y	x2
A	y2
v	dx2
b	dy2
v	root