Flun or Flain: How To spell?

The word Flun is misspelled against Flain, which is past perfect of "Flay."

Word contains consecutive vowels 'AI' in between alphabets fl & n is misspelled as 'U'
Wrong Spelling:  fl-u-n 
Correct Spelling:  fl-ai-n 
Check more misspelled words of Flain to spell it correct.

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