%nprocshared=1
%mem=20MW
#p hf/3-21g* geom=connectivity scf=tight sp test

Title Card Required

0 1
 Si                -0.51802520    1.78696677   -0.93011030
 Si                -0.48567797   -0.66362758   -1.26830880
 Si                -1.24731253   -1.82276607    0.71800281
 Si                -2.21022660    0.31742144    0.12030346

 1 2 1.0 4 1.0
 2 3 1.0 4 1.0
 3 4 1.0
 4