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Solution

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Start by marking the bulbs in rows 2, 4, 5 and column E as duds (Clue 4).

columnABCDEFGHIJ
row
1
FDOEMAPEDO
2
NRESDROIVD
3
UUSSNPSSOD
4
CEINOYHHNA
5
LTOHLDIEVR
6
IEOMTECEAE
7
RCKCITIAOR
8
NEZSEAENLR
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