ibis[6], psin[5], spin[5], pirs[5], inni[4], insi[4], sini[4],
bin[5], ibn[5], bis[5], nip[4], pin[4], pni[4], psi[4], inr[3], sir[3],
bi[4], pi[3], ii[2], in[2], ni[2], si[2],
