perl[8], penn[7], pers[7], reps[7], lern[5], renn[4], senn[4], rens[4], sens[4],
per[6], rep[6], pes[6], les[4], ern[3], ren[3], sen[3], ers[3], res[3], ess[3],
ne[2], er[2], re[2], es[2],
