*HEADING
: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED 1-ELEMENT MESH  [B32OSH]
*NODE,NSET=NALL
1,0.
3,.5,1.,1.5
2,1.,2.,3,
*ELEMENT,TYPE=B32OSH, ELSET=EALL
 1,1,3,2
*BEAM SECTION,SECTION=I,MATERIAL=A1, ELSET=EALL
5.,10.,10.,10.,1.,1.,1.
*MATERIAL,NAME=A1
*ELASTIC
30.E6,0.3
*DENSITY
7.5E-4, 
*STEP
*FREQUENCY, eigensolver=lanczos
9, , ,-1.0E4
*END STEP