Postpiad or Postpaid: How To spell?

The word Postpiad is misspelled against Postpaid, an adjective meaning "Having the postage prepaid, as a letter."

Word contains consecutive vowels 'AI' in between alphabets postp & d is misspelled as 'IA'
Wrong Spelling:  postp-ia-d 
Correct Spelling:  postp-ai-d 
Find more incorrect spellings of Postpaid to spell right way.

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