Pieces =  6
cksum.aa = 3620049263 1425408
cksum.ab = 4149858675 1425408
cksum.ac = 1581987814 1425408
cksum.ad = 1103143738 1425408
cksum.ae = 3617167837 1425408
cksum.af = 1318231165 705570