***Frequenza*** - ***Forma***
  1 unable
  1 unconscious
  1 unconsciously
  1 unconsciousness
  3 under
  1 under-masters
  1 underneath
  2 understand
  1 understanding
  1 understands
  1 universally
  1 unless
  1 unskilled
  2 until
  4 up
  5 upon
  1 urge
  8 us
  2 uses
  3 utter