pert[6], trep[6], port[6], prot[6], trop[6], oper[5], pero[5], erot[5], tero[5],
pet[5], pot[5], top[5], per[4], rep[4], por[4], pro[4], rop[4], eto[4], ret[4], ter[4], ort[4], rot[4], tor[4], ero[3],
pe[3], op[3], po[3], et[3], te[3], ot[3], to[3], eo[2], er[2], re[2], or[2], ro[2],
