foby[11], foce[9], boby[9], coby[8], obcy[8], obce[7], boye[7],
fob[9], efy[8], bob[7], efo[7], cob[6], boy[6], oby[6],
ef[6], fe[6], by[5], be[4], bo[4], ce[3], co[3], eo[2],
