 The Edicts of Ashoka contain Brahmi script and its regional variant, Tamil-Brahmi, was an early script used in the inscriptions in cave walls of Tamil Nadu and later evolved into the Tamil Vatteluttu alphabet.The Bhattiprolu alphabet, as well as a variant of Brahmi, the Kadamba alphabet, of the early centuries BCE gave rise to the Telugu-Kannada alphabet, which developed into the Kannada and Telugu scripts.Important inscriptions include the 33 inscriptions of emperor Ashoka on the Pillars of Ashoka (272 to 231 BCE), the Sohgaura copper plate inscription (earliest known example of the copper plate type and generally assigned to the Mauryan period, though the exact date is uncertain), the Hathigumpha inscription of Kharavela (2nd century BCE), the Besnagar pillar inscription of Heliodorus, the Junagadh rock inscription of Rudradaman I (150 CE), the Nasik cave inscriptions, the Rabatak inscription, the Allahabad Pillar inscription of Samudragupta, the Aihole inscription of Pulakesi II (634 CE), the Kannada Halmidi inscription, and the Tamil copper-plate inscriptions.