The word Sumed is misspelled against Summed, which is past tense of "Sum"
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Summed has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings su & ed which should not be misspelled with single 'M'
Wrong Spelling:  su-m-ed 
Correct Spelling:  su-mm-ed 
Check more misspelled words of Summed to spell it correct.