In old Kannada at around 10th-14th century, most of the initial /p/ debuccalised into a /h/ e.g. OlKn. pattu, MdKn. hattu "ten".
iN old KannadA at aRound 10th-14tH cenTuRy, most OF THe iNitial /P/ deBUCcaliseD intO A /h/ e.G. oLkN. pAtTU, mdKn. hattu "tEn".