The word Betrimed is misspelled against Betrimmed, which is past tense of "Betrim"
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Betrimmed has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings betri & ed which should not be misspelled with single 'M'
Wrong Spelling:  betri-m-ed 
Correct Spelling:  betri-mm-ed 
Find more wrongly spelled words of Betrimmed to spell it well.