【伯仲叔季】〖bó zhòng sh jì〗[numbers in sequence of brothers; order of seniority among brothers; eldest, second, third and youngest; the first, second, third and fourth]

伯哥第一作表率，

仲兄排次情义怀，

叔称老三求忠孝，

季诺四弟推诚爱。

兄弟排行的次序，伯是老大，仲是第二，叔是第三，季是最小的。Brother ranking of order, Bo is eldest, Zhong is second, uncle is third, season is smallest.同：甲乙丙丁。