brocz[8], oboro[7], oborz[7], zorbo[7],
obco[7], bocz[7], boro[6], robo[6], zorb[6], coro[5],
cob[6], bor[5], rob[5], oro[3], zoo[3], orz[3],
bo[4], co[3], or[2], ro[2], oz[2],
