Array ( [0] => Array ( [0] => 10 [1] => 11 [2] => 12 ) [1] => Array ( [0] => 13 [1] => 14 [2] => 15 ) [2] => Array ( [0] => 16 [1] => 17 [2] => 18 ) )

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[10,11,12]
[13,14,15]
[16,17,18]