bolo[7], lobo[7], obol[7], lolo[6], bono[6], obon[6], nono[4], ozon[4], zono[4],
bol[6], lob[6], lol[5], bon[5], zol[4], non[3], ono[3], zon[3], zoo[3],
bo[4], no[2], on[2], oz[2],
