Test of the predictive power of our method. Shell a was omitted from the set of shell radii we used elsewhere in this paper and the procedure from the Sect. 5.1 was repeated. The meaning of this figure is analogous to that of Fig. 3. For all the potentials from the basic grid, shells b, c and d can be identified as shells number 3, 4 and 5 from the first generation. If we did not know about the existence of the shell a, the method would suggest that this shell should exist. In this case we would be left with some doubt, because another identification of shells b, c and d is possible for a small fraction of potentials, which gives them shell numbers 2, 3, and 4.
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