start-node = 2

grid
start    = (1,2,3)
end      = (4,5,6)
x-number = 2
y-number = 2
z-number = 2
x-rule   = logarithmic
y-rule   = linear
z-rule   = logarithmic

grid
start    = (9,8,7)
end      = (6,5,4)
x-number = 2
y-number = 2
z-number = 2
x-rule   = linear
y-rule   = logarithmic
z-rule   = linear

end