*HEADING
 - Adding/removing elements and verification for initial conditions
 - Test for CPE4 element
*RESTART,WRITE
*NODE, NSET=N1
 1,0,0,0
 2,2,0,0
 3,2,2,0
 4,0,2,0
*NCOPY , OLDSET=N1, NEWSET=N2, SHIFT, CHANGE=10
 0,5,0

*ELEMENT, TYPE=CPE4, ELSET=E1
 1,1,2,3,4
*ELEMENT, TYPE=CPE4, ELSET=E2
 11,11,12,13,14
*SOLID SECTION, ELSET=E1, MATERIAL=MAT
*SOLID SECTION, ELSET=E2, MATERIAL=MAT1
*MATERIAL, NAME=MAT
*HYPERELASTIC
3.2E6,0.8E6,0.001
*DENSITY
1000., 
*MATERIAL, NAME=MAT1
*HYPERELASTIC
3.2E6,0.8E6,0.001
*DENSITY
1000., 
*BOUNDARY
 1,1,2
11,1,2
 2,2,2
12,2,2
 4,1,1
14,1,1
*NSET, NSET=SIDE_1
 2, 3,
12,13
*STEP,NLGEOM
*DYNAMIC
0.01,0.1
*BOUNDARY, TYPE=VELOCITY
 SIDE_1,1,1,2
*EL FILE
 S,LE
*NODE FILE
 U,
 COORD,
*OUTPUT, FIELD,FREQ=1
*ELEMENT OUTPUT
 S,LE
*NODE OUTPUT
 U,
 COORD,
*OUTPUT,FIELD,VARIABLE=PRESELECT,FREQ=1
*END STEP