Pieces =  7
cksum.aa = 2194007731 240640
cksum.ab = 4080772378 240640
cksum.ac = 126348248 240640
cksum.ad = 3593939620 240640
cksum.ae = 1150357549 240640
cksum.af = 3218905552 240640
cksum.ag = 4285812777 159051