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  1. (x) NB NS 1 Z PS PB -0.5 0 0.5 1 x -1 (y) Z PS PB y 0 6 12
  2. NB NS Z PS PB -1 -0.5 0 0.5 1  (AS)  (S)  (M)  (B)  (AB) 0 0.25 0.5 0.75 1
  3. NB Z PB 0 6 12  (AS)  (M)  (AB) 0 0.5 1 y yS 12 1   7.2 6 0.5   3.6 0  0 0.25 0.5 0.75 1.0 xs -1.0 -0.6 -0.5 -0.3 0 0.3 0.5 0.6 1.0 x
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