Abstraction
  1 <=> 1 by parity relation
  1 <=> 3 by parity relation
  1 <=> 5 by parity relation
  2 <=> 2 by parity relation
  2 <=> 4 by parity relation
  3 <=> 1 by parity relation
  3 <=> 3 by parity relation
  3 <=> 5 by parity relation
  4 <=> 2 by parity relation
  4 <=> 4 by parity relation
  5 <=> 1 by parity relation
  5 <=> 3 by parity relation
  5 <=> 5 by parity relation
  3 <=> 5 by joint magnitude relation
  4 <=> 4 by joint magnitude relation
  4 <=> 5 by joint magnitude relation
  5 <=> 3 by joint magnitude relation
  5 <=> 4 by joint magnitude relation
  5 <=> 5 by joint magnitude relation
  
  Number Study
  An Interactive Fiction
  Release 1 / Serial number 150512 / Inform 7 build 6M22 (I6/v6.33 lib 6/12N) SD
  
  Abstraction
  
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