bont[7], boot[7], bort[7], torb[7], bono[6], obon[6], bron[6], boro[6], robo[6], noto[5], tono[5], ront[5], tron[5], root[5], roto[5], toro[5], noro[4],
bot[6], bon[5], bor[5], rob[5], not[4], ton[4], oto[4], ort[4], rot[4], tor[4], ono[3], nor[3], oro[3],
bo[4], ot[3], to[3], no[2], on[2], or[2], ro[2],
