! $CONTRL SCFTYP=RHF RUNTYP=HESSIAN $END
 $CONTRL SCFTYP=RHF RUNTYP=OPTIMIZE NZVAR=5 $END
! $CONTRL MPLEVL=2 SCFTYP=RHF $END
! $FORCE METHOD=ANALYTIC $END
! $BASIS  GBASIS=N31 NGAUSS=6 NDFUNC=1 NPFUNC=1 $END
! $BASIS  GBASIS=STO NGAUSS=3 $END
 $BASIS  GBASIS=AM1 $END

 $DATA
C2H2 (this is the title card)                                                     
DNH      4

 H           1.0   0.0000000000   0.0000000000   1.6498986849
 C           6.0   0.0000000000   0.0000000000   0.5930253261
 $END      
 $ZMAT   IZMAT(1)=
         1,1,2,   1,1,3,  1,2,4, 5,1,2,4  5,2,1,3
 $END

 $LIBE  APTS(1) = 1.0,0.0,0.0,1.0,0.0,0.0 $END