Input (grade 12): Many great masters taught there: Dudjom Rinpoche, when he taught for a whole month in London in 1979, His Holiness Sakya Trizin, Gyalwang Karmapa, Tulku Urgyen Rinpoche and others.
Output (grade 10): Many great masters taught there: Dudjom Rinpoche, His Holiness Sakya Trizin, Gyalwang Karmapa, Tulku Urgyen Rinpoche and others.