Dreiner or Drainer: How To spell?

The word Dreiner is misspelled against Drainer, a noun meaning "One who, or that which, drains."

Word contains consecutive vowels 'AI' in between alphabets dr & ner is misspelled as 'EI'
Wrong Spelling:  dr-ei-ner 
Correct Spelling:  dr-ai-ner 
Find more wrongly spelled words of Drainer to spell it well.

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