The word Superaded is misspelled against Superadded, which is past tense of "Superadd"
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Superadded has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Supera & ed which should not be misspelled with single 'D'
Wrong Spelling:  Supera-d-ed 
Correct Spelling:  Supera-dd-ed 
Check more misspelled words of Superadded to spell it correct.