Notes about the Univeral Gaussian basis set
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The universal Gaussian basis set of de Castro, Jorge and coworkers.

Additional polarization functions may be added by including a suffix to this keyword: UGBSnP|V|O

Where n is an integer indicating whether to add 1, 2 or 3 polarization functions for each function
in the normal UGBS basis set. The second item is a code letter indicating which function should be
augmented polarization functions:
P adds them to all functions
V adds them to all valence functions
O requests the scheme used in Gaussian 03

For example:
UGBS1P keyword requests this basis set with one additional polarization function to all orbitals
UGBS2V adds two additional polarization function to all valence orbitals.

The O suffix adds the same functions as the UGBSnP keywords in Gaussian 03. UGBS1O adds a "p" function
for each "s", a "d" function for each "p", and so on; UGBS2O adds a "p" and "d" function for each "s",
a "d" and "f" function for each "p", and UGBS3O adds a "p", "d" and "f" for each "s", etc.

Diffuse functions may be added as usual with + or ++; the first of these may be specified as 2+ to
add two diffuse functions for heavy atoms.

