mbir[7], pitt[7], bitw[7], prim[6], mirt[6], mitr[6], trip[6], titr[6], brwi[6],
bim[6], bit[6], mit[5], pit[5], tit[5], mir[4], itr[4], tir[4], tri[4], piw[4], wir[3],
bi[4], im[3], mi[3], pi[3], iw[2],
