Recent examples of periodic bifurcations in
descendant trees of finite p-groups with ![\"\"](\"Edit_9cbcf8ee-264f-4182-a221-014e42221898.png\")
？are used to show that
the possible p-class tower groups G of certain multiquadratic fields K with p- class
group of type (2,2,2), resp. (3,3), form periodic sequences in the descendant tree of the
elementary Abelian root ![\"\"](\"Edit_e398bd6a-d698-4d8b-999f-1c2de4593c3f.png\")
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