Pieces =  12
cksum.aa = 2483442432 240640
cksum.ab = 789330587 240640
cksum.ac = 21003513 240640
cksum.ad = 481032532 240640
cksum.ae = 3955946481 240640
cksum.af = 2498936812 240640
cksum.ag = 2324898832 240640
cksum.ah = 3225877181 240640
cksum.ai = 330372166 240640
cksum.aj = 3274175300 240640
cksum.ak = 571273261 240640
cksum.al = 1227211941 131534