efem[9], geek[7], kpem[7], emek[6], peem[6], enem[5],
pfe[8], fee[7], fen[7], nef[7], keg[6], gem[6], kem[5], gen[5], mee[4], men[4], nem[4], nep[4], pen[4],
ef[6], fe[6], em[3], me[3], pe[3], ee[2], en[2],
