The word Butoned is misspelled against Buttoned, which is past tense of "Button"
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Buttoned has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings bu & oned which should not be misspelled with single 'T'
Wrong Spelling:  bu-t-oned 
Correct Spelling:  bu-tt-oned 
Check more misspelled words of Buttoned to spell it correct.