The Set Menus of the Romance of the Three Kingdoms

Surprisingly, there are many duos and trios.
The most representative is the seamless trio of Il, Gan, Son, and Mi.
The duo of Li Jue and Guo Si, who frequently appear in historical records.
Under Sun Jian: Huang Gai, Han Dang, and Zhou Wu (though Zhou Wu died too early).
Under Lu Bu: Song Xian, Hou Cheng, and Wei Xu.
These are the major ones.
The duo of Yu Fang and Yu Guang under Yuan Shang.
The divine detectives of Shangyong, Xin and Yi.
Gu Liang and Gui Yue under Liu Biao.
What else is there?