Pieces =  12
cksum.aa = 1282567458 240640
cksum.ab = 1244806570 240640
cksum.ac = 1022446050 240640
cksum.ad = 192376063 240640
cksum.ae = 3463904873 240640
cksum.af = 4117954093 240640
cksum.ag = 144370185 240640
cksum.ah = 4108933593 240640
cksum.ai = 131698713 240640
cksum.aj = 932840386 240640
cksum.ak = 4194716827 240640
cksum.al = 753637810 6648