Pieces =  7
cksum.aa = 404301538 1425408
cksum.ab = 1873952062 1425408
cksum.ac = 229521459 1425408
cksum.ad = 3879345064 1425408
cksum.ae = 2335017613 1425408
cksum.af = 2685172676 1425408
cksum.ag = 746293068 147511