MDA 01.00 SPK 00
#PROGRAM:
  Program OW0L,  (c) Oliver Waldmann, Version 11.5.01
#HAMILTONIAN:
  Heisenberg Hamiltonian
#SYSTEM:
  Spins = 1/2 1/2 1/2 1/2 
  Couplings = 1-2 2-3 3-4 4-1 
#PARAMETER:
  Strengths = -1 -1 -1 0 
  Emin = -1.61602540378444
#COMMENT:
  sorted spektrum with classification
#DATA:
0           	0	0
0.6589186226	2	0
1.366025404 	2	1
1.732050808 	0	1
2.073132185 	2	2
2.366025404 	4	0