***Frequenza*** - ***Forma***
  2 o
  1 object
  2 obliged
  1 observed
  2 obtained
  1 obvious
  1 od
  2 odyssee
  1 odysseus
328 of
  1 office
  1 offices
  4 often
  1 old
  1 olympus
  1 omen
 14 on
  3 once
 33 one
  1 onion
 18 only
  5 opinion
  1 opportunity
 61 or
  1 oracles
  3 order
  1 orderly
  3 original
  1 originally
  2 orpheus
 29 other
  4 others
 17 ought
  5 out
  1 over
  1 overpowers
  8 own
  1 ox