Gunstanding or Gainstanding: How To spell?

The word Gunstanding is misspelled against Gainstanding, which is present continuous of "Gainstand"

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

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