Suppose G contains no sections isonaorphic to the extension qPn: (Zm,Zp) of an elementary abelian q-group of order qpn by the group Zm:Zp for any prime number q and any integer n with m= (qpn-1)/(qn-1).

• 其中q~(pn):(Z_m:Z_n))是初等交换q-群q~(pn)被Z_m:Z_p的扩张,而m=(q~(pn)-1)/(q~n-1)。