Which of the following rivers is NOT a tributary of the Ken River?

The Ken River is an interstate river flowing through Uttar Pradesh and Madhya Pradesh, originating from Ahirgawan village on the northwestern slopes of the Kaimur hills in Madhya Pradesh's Jabalpur district. With a total course of 427 kilometers, it serves as the final tributary joining the Yamuna River before the Yamuna confluences with the Ganga. The Ken's significant tributaries include Alona, Bearma, Sonar, Mirhasan, Shyamari, Banne, Kutri, Urmil, Kail, and Chandrawal. The Dhasan River, rather than being a tributary of the Ken, is a separate river system in the region.