“…It is obvious that M p G and m p G are, respectively, the largest and the smallest indices of the maximal parabolic subgroups of G. Essentially, we can determine all the maximal parabolic subgroups of G from the Dynkin diagram of G 3 6 and calculate precisely their indices from the information in [1,3,7,8,15], and obtain the proof of (2) First we prove (1) in Lemma 4. Suppose that (1) is not true, that is, suppose there exists a maximal subgroup K of G such that G K = s < M p G , but s is neither the index of a maximal parabolic subgroup of G nor in Table II and Pot p s < t n (see Table II for t n ).…”