Shiva Purana
दलेषु सिद्धयश्चाष्टौ केसरेषु च शक्तिकाः ॥ रुद्रा वामादयस्त्वष्टौ पूर्वादिपरितः क्रमात् ॥ ३३ ॥
The eight Siddhas in the petals and the Shaktikas in the Kesaras The eight Rudras, beginning with Vama, are surrounded by the east and the west, in order.
english translation
daleSu siddhayazcASTau kesareSu ca zaktikAH ॥ rudrA vAmAdayastvaSTau pUrvAdiparitaH kramAt ॥ 33 ॥
hk transliteration by Sanscript