bigi[8], tigr[7], irgi[6], ibis[6],
big[7], gib[7], ghi[7], bit[6], git[6], hit[6], gir[5], igr[5], irg[5], bis[5], gis[5], his[5], itr[4], tir[4], tri[4], sit[4], sir[3],
bi[4], hi[4], ts[3], ii[2], si[2],
