bibop[10],
bobu[10], bibo[8], uboi[8], upoi[7],
bub[9], pub[8], bib[7], bob[7], obu[7], piu[6], opu[6], boi[5], obi[5], poi[4],
bu[6], bi[4], bo[4], pi[3], op[3], po[3],
