Pieces =  12
cksum.aa = 1207973803 240640
cksum.ab = 903799234 240640
cksum.ac = 367742896 240640
cksum.ad = 2186341829 240640
cksum.ae = 2323961418 240640
cksum.af = 2832168966 240640
cksum.ag = 1149019434 240640
cksum.ah = 3535927539 240640
cksum.ai = 4280607213 240640
cksum.aj = 2608387635 240640
cksum.ak = 1316279806 240640
cksum.al = 20821507 168024