Raoned or Rained: How To spell?

The word Raoned is misspelled against Rained, which is past tense of "Rain"

Word contains consecutive vowels 'AI' in between alphabets r & ned is misspelled as 'AO'
Wrong Spelling: r-ao-ned
Correct Spelling: r-ai-ned
Find more incorrect spellings of Rained to spell right way.