Pieces =  12
cksum.aa = 2259469502 240640
cksum.ab = 637070098 240640
cksum.ac = 3421581852 240640
cksum.ad = 259759471 240640
cksum.ae = 2454306955 240640
cksum.af = 4286301167 240640
cksum.ag = 1386443816 240640
cksum.ah = 2683678283 240640
cksum.ai = 1356965874 240640
cksum.aj = 2169119961 240640
cksum.ak = 441169219 240640
cksum.al = 2870362540 223349