noto[5], tono[5], ront[5], tron[5], root[5], roto[5], toro[5], noro[4],
not[4], ton[4], oto[4], ort[4], rot[4], tor[4], ono[3], nor[3], oro[3],
ot[3], to[3], no[2], on[2], or[2], ro[2],
