Hertstring or Heartstring: How To spell?

The word Hertstring is misspelled against Heartstring, a noun meaning "A nerve or tendon, supposed to brace and sustain the heart."

Heartstring has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets h & rtstring is misspelled as 'E'
Wrong Spelling:  h-e-rtstring 
Correct Spelling:  h-ea-rtstring 
Find more wrongly spelled words of Heartstring to spell it well.

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