bibop[10],
biby[9], boby[9], bibo[8], pipy[7], popy[7], pipo[6], popi[6],
bib[7], bob[7], boy[6], oby[6], boi[5], obi[5], pip[5], pop[5], opy[5], poi[4],
by[5], bi[4], bo[4], pi[3], op[3], po[3], ii[2],
