The word Tone is misspelled against Tonne, a noun meaning "A tun."
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Tonne has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings to & e which should not be misspelled with single 'N'
Wrong Spelling:  to-n-e 
Correct Spelling:  to-nn-e 
Find more incorrect spellings of Tonne to spell right way.