The word Riding is misspelled against Ridding, which is present continuous of "Rid"
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Ridding has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Ri & ing which should not be misspelled with single 'D'
Wrong Spelling:  Ri-d-ing 
Correct Spelling:  Ri-dd-ing 
Find more wrongly spelled words of Ridding to spell it well.