Subpoening or Subpoenaing: How To spell?

The word Subpoening is misspelled against Subpoenaing, which is present continuous of "Subpoena"

Word contains consecutive vowels 'AI' in between alphabets subpoen & ng is misspelled as 'I'
Wrong Spelling:  subpoen-i-ng 
Correct Spelling:  subpoen-ai-ng 
Check more misspelled words of Subpoenaing to spell it correct.

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