The domination range of each of the node is demonstrated in the pair [x,y].
v has a domination range of [1,2] and w, [1,3] Lemma lb: Given the set of occurrence pairs associated with the suffixes that are reachable from an (internal) node v, the fa.nd df of the substring that terminates at v are equal to the rank of the set of occurrence pairs and the distinct x-dimension integers of the set.