mbir[7], tigr[7], mirt[6], mitr[6],
big[7], gib[7], bid[6], gid[6], bim[6], mig[6], bit[6], git[6], dim[5], gir[5], igr[5], irg[5], dit[5], mit[5], mir[4], itr[4], tir[4], tri[4],
bi[4], id[3], im[3], mi[3],
