bebop[10],
abby[9], baby[9], boby[9], abbo[8], babo[8], boba[8], obab[8], boya[7], boye[7],
bab[7], bob[7], aby[6], boy[6], oby[6], abo[5], boa[5], oba[5], opy[5],
by[5], ba[4], be[4], bo[4], pa[3], pe[3], op[3], po[3], eo[2],
