The word Riming is misspelled against Rimming, which is present continuous of "Rim"
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Rimming has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings ri & ing which should not be misspelled with single 'M'
Wrong Spelling:  ri-m-ing 
Correct Spelling:  ri-mm-ing 
Find more wrongly spelled words of Rimming to spell it well.