bont[7], boot[7], bono[6], obon[6], opon[5], pono[5], noto[5], tono[5],
bot[6], bon[5], pot[5], top[5], not[4], ton[4], oto[4], ono[3],
bo[4], op[3], po[3], ot[3], to[3], no[2], on[2],
