bist[6], bits[6], bunt[6], nist[4], unis[4], tuns[4],
bin[5], bis[5], bit[5], bst[5], bus[5], ins[3], ist[3], uni[3], uns[3], nut[3], tun[3],
bi[4], in[2], si[2], ti[2], st[2], ui[2], nu[2], tu[2],
