Portuguese stemmer: error in output.txt file?

Hello,

my implementation of the Portuguese stemmer stems, for instance, insuficiência
to insuficiente. However, according to the output.txt file it should stem to
insuficente (without the i after the c). The same happens with 7 others words,
all ending with iência(s)
(deficiência,deficiências,eficiência,impaciência,inconsciência,ineficiência,
ineficiências). These are the only differences between what my code produces
and the output file. Should those words stem to ente without an i before, or is
it an error in the output.txt file?

Thanks,

Frederick Brault