Faasen or Fausen: How To spell?

The word Faasen is misspelled against Fausen, a noun meaning "A young eel."

Word contains consecutive vowels 'AU' in between alphabets f & sen is misspelled as 'AA'
Wrong Spelling:  f-aa-sen 
Correct Spelling:  f-au-sen 
Explore spell check of Fausen to spell without errors.

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