Pens or Pains: How To spell?

The word Pens is misspelled against Pains, a noun meaning "Labor; toilsome effort; care or trouble taken; -- plural in form, but used with a singular or plural verb, commonly the former."

Word contains consecutive vowels 'AI' in between alphabets p & ns is misspelled as 'E'
Wrong Spelling:  p-e-ns 
Correct Spelling:  p-ai-ns 
Explore spell check of Pains to spell without errors.

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