The word Troting is misspelled against Trotting, which is present continuous of "Trot"
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Trotting has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings tro & ing which should not be misspelled with single 'T'
Wrong Spelling:  tro-t-ing 
Correct Spelling:  tro-tt-ing 
Find more incorrect spellings of Trotting to spell right way.