ka ba bzhi

four pillars [the four main students of zurchungpa sheraptra namely kyot"n sh kye of gungbu yangkeng lama of kyonglung len sh kya zangpo of chuwar and datik cosh k of nakmore chn, the four main students of marpa lotsawa (rngog chos rdor, bsod nams rgyal mthan, mtshur dbang rdo rje of tol, milarepa] [IW]