 The nine tribes were named in Chinese histories as the "Huihe" (回纥), "Pugu" (仆骨), "Hun" (浑), "Bayegu" (拔野古), "Tongluo" (同罗), "Sijie" (思结), "Qibi" (契苾), "A-Busi" (阿布思) and "Gulunwugusi" (骨仑屋骨思).The first seven named – who lived north of the Gobi Desert – were dominant, whereas the "A-Busi" and "Gulunwugu(si)" emerged later and were accepted on an equal footing with the others some time after 743.The "A-Busi" apparently originated as a sub-tribal group within the "Sijie" and the "Gulunwugu(si)" as a combination of two other tribes.