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Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.20, 8.4.1 - 8.4.6
array ( 'Apple' => array ( 0 => 'iPhone 4', 1 => 'iPhone 5', ), 'Samsung' => array ( 0 => 'Galaxy S6', ), )

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