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Table
⍪ 2 3 4 2 3 4 cube ⍝ 3D array 1 2 3 4 5 6 7 8 ⍪ cube 1 2 3 4 5 6 7 8
Catenate First
mat 1 2 3 4 5 6 mat ⍪ 0 1 2 3 4 5 6 0 0 0 mat ⍪ 7 8 9 1 2 3 4 5 6 7 8 9
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