beg[7], gap[6], aby[6], gay[6], boy[6], oby[6], abo[5], boa[5], oba[5], ago[5], ego[5], opy[5],
by[5], ba[4], be[4], ag[4], bo[4], go[4], pa[3], pe[3], op[3], po[3], eo[2],