Position śrī bīja, then spot māyā bīja, then kāma bīja, then vāgbhava bīja And eventually parā bīja. Hence the first line of this mantra is fashioned. Goddess is popularly depicted as sitting about the petals of lotus that may be kept around the horizontal entire body of Lord Shiva. https://www.youtube.com/watch?v=OnBTYRqg61k&t=6s