Pieces =  12
cksum.aa = 1756825860 1425408
cksum.ab = 1405966937 1425408
cksum.ac = 3861957471 1425408
cksum.ad = 2734336395 1425408
cksum.ae = 3213892212 1425408
cksum.af = 3359420801 1425408
cksum.ag = 2265006235 1425408
cksum.ah = 110601386 1425408
cksum.ai = 3269654202 1425408
cksum.aj = 4039056662 1425408
cksum.ak = 456471560 1425408
cksum.al = 2402113428 1172456