left
0
h
right
left
1
e
right
left
2
l
right
left
3
l
right
left
4
o
right
left
5
,
right
left
6
right
left
7
w
right
left
8
o
right
left
9
r
right
left
10
l
right
left
11
d
right
left
12
!
right
Generate new
Next
Best length: 1