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aN
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caf MT OEE
ao
ttt
Sr te
ee
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pees
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G, (@)
al
In order to follow particular paths of Figure 1, the
four possible sequences are listed as A, B, Cc, D.
For example,
A sequence tioves to the left at the branch-point following each
shot, indicated as Shot #1 good; Shot #2A good; Shot
~y
#3,
-