*include, input=substr_multi_nodes.inp
*element,type=z2,elset=three,file=lib2
*substructure property,elset=three
*element,type=z2,elset=four,file=lib2
*substructure property,elset=four
************************
*STEP
*substructure generate, type=z3, overwrite,
recovery matrix=yes, mass matrix=yes,
libr=lib3
*RETAINED NODAL DOFS,sorted=no
*substructure matrix output, stiffness=yes,
mass=yes, recovery=yes, file=LibMatrices3
*END STEP