obce[7], obco[7], webo[6], cewo[5], owce[5], woce[5], owco[5], owoc[5],
cob[6], web[5], cew[4], ewo[3], owe[3], owo[3],
be[4], bo[4], ce[3], co[3], eo[2], ew[2], we[2],
