applications.collages.gridAlgebra("3-grid algebra"):
( 3,
  {
    F = 1bc-2dc-4cd-6da-7cb,
    G = 1ab-3ad-4ba-6cd-7bc-8ab,
    H = 1ab-3cb-4da-6cd-7bc-8ab,
    I = 0bc-1ad-2bc-4ab-7cd,
    J = 0da-1ab-4ad-5cb-6ad-8bc
  }
)
