20
 Initial positions and velocity
Ag      3.32932    -0.61355     0.47949     0.00119    -0.00090     0.00186
Ag      0.14682     1.88659    -2.80164     0.00081    -0.00012    -0.00071
Ag      0.15300    -3.92960     0.20962     0.00061    -0.00123    -0.00037
Ag      1.42739     0.08083     2.63638    -0.00028     0.00108    -0.00075
Ag      0.13515     2.49080     2.02305    -0.00148     0.00130    -0.00138
Ag     -2.37693     2.67512    -1.89830     0.00130     0.00143     0.00066
Ag     -0.67381     0.97936    -0.53340     0.00029     0.00117    -0.00134
Ag     -0.11534     3.63952    -0.62460    -0.00009    -0.00131     0.00050
Ag      0.65452    -1.16444     0.37312    -0.00059     0.00076    -0.00101
Ag     -0.17262    -2.54762     2.59523    -0.00121    -0.00049     0.00061
Ag      2.43025    -2.79078     1.81123     0.00134    -0.00065     0.00010
Ag     -1.99965    -1.56422     0.17454    -0.00146    -0.00031     0.00098
Ag      2.31453    -2.71250    -1.16360     0.00123     0.00091    -0.00123
Ag     -1.94787     0.06086    -2.69177    -0.00156    -0.00088    -0.00100
Ag     -1.24943     0.21927     2.08764    -0.00151    -0.00102    -0.00061
Ag      1.99450     1.68747     0.32046     0.00026    -0.00135     0.00183
Ag     -3.46417     0.70549    -0.18341     0.00120     0.00043    -0.00059
Ag     -0.17597    -1.91288    -1.99204    -0.00048     0.00103     0.00049
Ag     -2.24437     2.74574     1.01060     0.00019    -0.00114     0.00065
Ag      1.83469     0.06452    -1.83259     0.00024     0.00126     0.00129