<?php
return [
[
['Jan', 'Feb', 'Mar', 'Apr'],
[100, 200, 150, 300],
],
['Jan', 100],
['Feb', 200],
['Mar', 150],
['Apr', 300],
['a', 'aa'],
['b', 'ab'],
['c', 'ac'],
['d', 'ad'],
['a', 'b', 'c', 'd'],
['aa', 'ab', 'ac', 'ad'],
[[3.14]],
3.14,
];