Refruned or Refrained: How To spell?

The word Refruned is misspelled against Refrained, which is past tense of "Refrain"

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

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