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c Problem title
c cells
1  0 -1 imp:n=1  fill=5  tmp=1.2
2  0  1 imp:n=0
c universe 5
10 1 -5.0   -2     u=5   $ 1-st layer
11 1 -6.0    2 -3  u 5
12 1 -7.0    3 -4  u=5 imp:n=1
13 2 -7.0    4 -5  u=5
14 3 -7.0    5 -6  u=5
15 0         6 -7  u=5
16 0         7 -8  u=5
17 0         12 #16 u=5 fill=10
c
c
c universe 10
35 0 -20 21 -22 23 -24 25 u=10
36 0  20:-21:22:-23:24:-25    u=10   imp:n=0.1234 imp:p .1234 

c surfaces
1 so 20
*2 pz 0.
3 pz 1.
4 pz 2.
5 pz 3.
6 pz 4.
7 pz 5.
8 pz 6.
12 pz 5.5
c cube
20 px 3
21 px 1
22 py 3
23 py 1
24 pz 3
25 pz 1

c data cards
tr1 0 0 0
m1 92235 1.0 nlib=60c
m2 1001 2 8016 1
mt2 lwtr.01t
m3 $ Pure Al
        13027.60c 100.0
c example of repitition syntax
f4:n 10 3i 14



