bega[8], bacy[8], caby[8], cyga[8], baca[7], caba[7], bace[7], gaya[7], gaye[7],
beg[7], cyg[7], cab[6], aby[6], gay[6], aga[5],
by[5], ba[4], be[4], ag[4], ce[3], aa[2],
