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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12].reduce((acc, cur, idx, { length }) => {
const idxO = (idx / ((length / 2) | 0)) | 0
const idxI = (idx % ((length / 2) | 0) / 2) | 0
const idxII = idx % 2
acc[idxO] = acc[idxO] || []
acc[idxO][idxI] = acc[idxO][idxI] || []
acc[idxO][idxI][idxII] = cur
return acc
}, [])
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