male preference matrix
  1 0 2
  0 1 2
  0 1 2

female preference matrix
  1 2 0
  0 1 2
  2 0 1

female score matrix
  2 0 1
  0 1 2
  1 2 0

-----------------------

proposal 1
  1 2
  0
 

male preference matrix
  1 0 2
  0 1 2
  1 2

proposal 2
  1
  0 2
 

male preference matrix
  1 0 2
  0 1 2
  2

proposal 3 (final proposal)
  1
  0
  2