Pieces =  21
cksum.aa = 2219884070 240640
cksum.ab = 4058012260 240640
cksum.ac = 3174331549 240640
cksum.ad = 1069265288 240640
cksum.ae = 2677904041 240640
cksum.af = 2702690932 240640
cksum.ag = 3043060543 240640
cksum.ah = 91079643 240640
cksum.ai = 27900466 240640
cksum.aj = 1726619378 240640
cksum.ak = 1587280635 240640
cksum.al = 980318937 240640
cksum.am = 1829545693 240640
cksum.an = 1975469342 240640
cksum.ao = 3599304985 240640
cksum.ap = 2539529190 240640
cksum.aq = 946884463 240640
cksum.ar = 1281582220 240640
cksum.as = 3982764520 240640
cksum.at = 2465685334 240640
cksum.au = 3913612924 153734