Chilcotin Plateau
The plateau is nearly entirely drained by the Chilcotin River and its tributaries , the largest of which are the Chilanko and Chilko Rivers . 
<triplet> Chilcotin River <subj> Chilanko <obj> tributary <subj> Chilko River <obj> tributary <triplet> Chilanko <subj> Chilcotin River <obj> mouth of the watercourse <triplet> Chilko River <subj> Chilcotin River <obj> mouth of the watercourse