《容斋随笔·卷五·三代书同文》
却子克，楚国的斗克，周子克，宋国的司马臣克，字都是仪，晋国的籍偃、荀偃，郑国的公子偃，吴国的言偃，字都是游。
邾子克，楚鬭克，周王子克，宋司马之臣克，皆字曰仪。晋籍偃，荀偃，郑公子偃，吴言偃，皆字曰游。
Que Zi Ke; Chu state's Dou Ke; Zhou Zi Ke; Song state's Sima Shen Ke all had the given name Yi; Jin state's Ji Yan; Xun Yan; Zheng state's Prince Yan; Wu state's Yan Yan all had the given name You.