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A countable system of linearly interacting diiusions on the interval 01], indexed by a hierarchical group is investigated. A particular choice of the interactions guarantees that we are in the diiusive clustering regime, that is spatial clusters of components with values all close to 0 or all close to 1 grow i n v arious diierent scales. We studied this phenomenon in FG94]. In the present paper we analyze the evolution of single components and of clusters over time. First we focus on the timefatcat:bu7653fmy5axfbfgrhpfiokmoq