Array ( [0] => Array ( [0] => 2 [1] => 4 ) [1] => Array ( [0] => 3 [1] => 3 ) [2] => Array ( [0] => 5 [1] => 1 ) [3] => Array ( [0] => 1 [1] => 5 ) [4] => Array ( [0] => 5 [1] => 1 ) )