bibop[10], pobij[10],
biby[9], boby[9], bibo[8], obij[8], opij[7],
bib[7], bij[7], bob[7], boj[7], job[7], pij[6], boy[6], oby[6], boi[5], obi[5], opy[5], poi[4],
by[5], bi[4], bo[4], oj[4], pi[3], op[3], po[3], ii[2],
