Pieces =  12
cksum.aa = 2237172487 240640
cksum.ab = 3085733715 240640
cksum.ac = 1801523741 240640
cksum.ad = 1899803394 240640
cksum.ae = 966368493 240640
cksum.af = 3046248636 240640
cksum.ag = 2633619450 240640
cksum.ah = 2187398658 240640
cksum.ai = 353073887 240640
cksum.aj = 1566936788 240640
cksum.ak = 3200500895 240640
cksum.al = 2561092608 48320