rkang pa kha skong gi yi ge

verse feet/ lines tsheg khyim kha skong ba'i tshig phrad [ra ru, 'i yi, 'ang, yang, 'o, 'u, 'am gong du tseg yod pa rnams] verse filler [IW]

verse filler, a particle or word to complete the meter in a verse line; term of grammar. Verse padding [RY]