vorn[10], venn[9], nerv[9], oper[8], pore[8], penn[7], neon[5], none[5], renn[4],
von[9], vor[9], epo[7], pro[7], per[6], rep[6], non[4], ern[3], ren[3],
po[6], on[3], ne[2], er[2], re[2],
