Tuned or Tunned: How To spell?

The word Tuned is misspelled against Tunned, which is past tense of "Tun"

Tunned has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings tu & ed which should not be misspelled with single 'N'
Wrong Spelling: tu-n-ed
Correct Spelling: tu-nn-ed
Check more misspelled words of Tunned to spell it correct.