The word Stufed is misspelled against Stuffed, which is past tense of "Stuff"
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Stuffed has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Stu & ed which should not be misspelled with single 'F'
Wrong Spelling:  Stu-f-ed 
Correct Spelling:  Stu-ff-ed 
Check more misspelled words of Stuffed to spell it correct.