pech[8], help[8], spec[6], less[5], seps[5],
che[6], ech[6], hec[6], hel[6], hep[6], cel[5], cle[5], lec[5], cep[5], lep[5], pel[5], ple[5], hes[5], ces[4], sep[4], pss[4],
eh[4], he[4], ce[3], el[3], pe[3], es[2], se[2],
