my $list1 = [
    'u',
    [
        'list 1 unordered item 1',
        [
            'list 1 unordered item 2',
            {
                'inlist' => [
                    'o',
                    [
                        'list 1 unordered item 2 ordered item 1',
                        'list 1 unordered item 2 ordered item 2',
                        'list 1 unordered item 2 ordered item 3'
                    ]
                ]
            }
        ],
        [
            'list 1 unordered item 3',
            {
                'inlist' => [
                    'u',
                    [
                        'list 1 unordered item unordered item 1',
                        'list 1 unordered item unordered item 2',
                        [
                            'list 1 unordered item unordered item 3',
                            {
                                'inlist' => [
                                    'o',
                                    [
'list 1 unordered item unordered item 3 ordered item 1',
'list 1 unordered item unordered item 3 ordered item 2',
'list 1 unordered item unordered item 3 ordered item 3'
                                    ]
                                ]
                            },
                        ]
                    ]
                ]
            },
        ]
    ]
];

my $list2 = [
    'o',
    [
        'list 2 ordered item 1',
        ['list 2 ordered item 2', { value => '3' } ],
        [
            'list 2 ordered item 3',
            {
                inlist => [
                    'u',
                    [
                        'list 2 ordered item 3 unordered item 1',
                        'list 2 ordered item 3 unordered item 2',
                        'list 2 ordered item 3 unordered item 3',
                    ]
                ]
            }
        ]
    ]
];