The most dedicated Tibetan Buddhists seek nirvana, but for the common people the religion retains shamanistic elements. The worship also includes reciting prayers and intoning hymns, often to the sound of great horns and drums. A protective formula of esoteric significance, Om mani padme hum [Om, the jewel in the lotus], is repeated; it is inscribed on rocks and walls, tallied on prayer wheels, and displayed on banners and streamers. In addition to a large pantheon of spirits, demons, and genii, many Buddhas and bodhisattvas (future Buddhas) are worshiped along with their ferocious consorts, or Taras. The monastic orders include abbots, ordained religious mendicants, novices (candidates), and neophytes (children on probation). The standing of nuns is inferior.