The authors wish to thank Thomas Breuer for checking some of the maximal subgroups of classical groups, Frank Lubeck for help in dealing with F_4(3), Klaus Lux for determining the degrees of irreducible representations of SU_3 (8) over F_2 and Pham Huu Tiep for pointing out two results on the alternating groups and their covers.
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机译：作者要感谢Thomas Breuer检查了古典组的一些最大子组，Frank Lubeck帮助处理F_4（3），Klaus Lux确定了SU_3（8）在F_2上的不可约表示的程度以及Pham Huu Tiep指出交替组及其封面上的两个结果。
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