The word Sentineled is misspelled against Sentinelled, which is past tense of "Sentinel"
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Sentinelled has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings sentine & ed which should not be misspelled with single 'L'
Wrong Spelling: sentine-l-ed
Correct Spelling: sentine-ll-ed
Find more wrongly spelled words of Sentinelled to spell it well.