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Member for 4 years, 3 months, 18 days
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a comment created by Phil15
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forum post "Still confused"
[5] -> 5 [5, 2] -> 2 [5, 2, 9] -> 5 [2, 9, 1] -> 2 [9, 1, 7] -> 7 [1, 7, 4]