Oversen or Overseen: How To spell?
The word Oversen is misspelled against Overseen, which is past perfect of "Oversee"
Overseen has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Overs & n which should not be misspelled with single 'E'
Wrong Spelling:  Overs-e-n  Correct Spelling:  Overs-ee-n 
Explore spell check of Overseen to spell without errors.