herb[8], chen[7], cher[7], herc[7], henr[6],
che[6], ech[6], hec[6], ben[5], hen[5], ber[5], erb[5], reb[5], her[5], cen[4], cne[4], cer[4], ner[3], ren[3],
be[4], eh[4], he[4], ce[3], en[2], er[2], re[2],
