The word Trammeling is misspelled against Trammelling, which is present continuous of "Trammel"
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Trammelling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings tramme & ing which should not be misspelled with single 'L'
Wrong Spelling:  tramme-l-ing 
Correct Spelling:  tramme-ll-ing 
Find more wrongly spelled words of Trammelling to spell it well.