Array ( [0] => Array ( [0] => a [1] => e [2] => w ) [1] => Array ( [0] => a [1] => e [2] => x ) [2] => Array ( [0] => a [1] => e [2] => y ) [3] => Array ( [0] => a [1] => e [2] => z ) [4] => Array ( [0] => a [1] => f [2] => w ) [5] => Array ( [0] => a [1] => f [2] => x ) [6] => Array ( [0] => a [1] => f [2] => y ) [7] => Array ( [0] => a [1] => f [2] => z ) [8] => Array ( [0] => a [1] => g [2] => w ) [9] => Array ( [0] => a [1] => g [2] => x ) [10] => Array ( [0] => a [1] => g [2] => y ) [11] => Array ( [0] => a [1] => g [2] => z ) [12] => Array ( [0] => b [1] => e [2] => w ) [13] => Array ( [0] => b [1] => e [2] => x ) [14] => Array ( [0] => b [1] => e [2] => y ) [15] => Array ( [0] => b [1] => e [2] => z ) [16] => Array ( [0] => b [1] => f [2] => w ) [17] => Array ( [0] => b [1] => f [2] => x ) [18] => Array ( [0] => b [1] => f [2] => y ) [19] => Array ( [0] => b [1] => f [2] => z ) [20] => Array ( [0] => b [1] => g [2] => w ) [21] => Array ( [0] => b [1] => g [2] => x ) [22] => Array ( [0] => b [1] => g [2] => y ) [23] => Array ( [0] => b [1] => g [2] => z ) )