Note 1 — Chapter XXXIX
Reading edition
Their classification was as follows:— S stood by itself because of the peculiar phonetic laws which it obeys. P.C.T. called soft consonants [really hard not soft]. B.G.D. called hard consonants [these are in fact rather soft than hard], F. CH. TH. called rough consonants. LL. M. NN. NG. RR. called strong consonants. Bh. Dh. Ch. Mh. L.N.R. called light consonants.