[34] The full mantra in Tibetan is Therefore: ཨོཾ་མ་ཎི་པདྨེ་ཧཱུྃ་ཧྲཱིཿ The hrīḥ just isn't normally vocalized audibly and should be resonated "internally" or "secretly" https://harithayogshala.com/blog/om-mani-padme-hum-meaning