E    
  D  
    T

Encyclopaedia of DesignTheory: A semi-Latin square

Here is a semi-Latin square. Each cell of the 6×6 square contains three of the eighteen symbols A,...,L,U,...,Z.

A L U F K V B G W C H Y D I Z E J X
C I V B J U H L Z E F W G K X A D Y
D J W A E Z C K U I L X B F Y G H V
E K Y H I W A F X D G U J L V B C Z
F G Z C D X I J Y A B V E H U K L W
B H X G L Y D E V J K Z A C W F I U

Questions:


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R. A. Bailey, Peter J. Cameron
20 November 2002