birrs[7],
birr[6], bris[6], biss[6], zins[6], sirr[4], niss[4], riss[4], sirs[4],
cis[6], sic[6], bin[5], brr[5], bis[5], irr[3], ins[3], sir[3], iss[3],
bi[4], in[2], si[2],