sentences:  The "lhun grub" aspect has to do with esoteric practices, such as (but not limited to) Thödgal, that self-liberate the human body into a Sambhogakāya (rainbow body phenomenon).The symbol of Dzogchen is a Tibetan "A" wrapped in a "thigle".The "A" represents "kadag" while the "thigle" represents "lhun grub".