$contrl scftyp=RHF runtyp=optimize icharg=0
     mult=1 coord=cart $end
 $system timlim=16660 mwords=20 $end
 $statpt nstep=350 HESS=calc PURIFY=.TRUE. hssend=.true. $end
 $basis gbasis=n31 ngauss=6 $end
 $guess guess=huckel $end
 $data
malonaldehyde
C1
C   6.0    0.097595   -0.380234   -0.393524
O   8.0    0.375977   -1.662323    0.152359
C   6.0   -1.385315   -0.122452   -0.230057
C   6.0    0.879379    0.640228    0.406265
H   1.0    0.345749   -0.433044   -1.475143
H   1.0    1.226746   -1.610367    0.553314
H   1.0   -1.646271    0.876053   -0.646729
H   1.0   -1.659546   -0.148026    0.848282
H   1.0   -1.968887   -0.903076   -0.767456
H   1.0    0.688507    1.662338    0.009293
H   1.0    1.968887    0.422989    0.339020
H   1.0    0.571320    0.603241    1.475128
 $end