next(1,2). next(2,3). next(3,4). next(4,5). next(5,6). next(6,7). next(7,8). next(8,9). next(9,10). next(10,11). next(11,12). next(12,13). next(13,14). next(14,15). next(15,16). next(16,17). next(14,18). next(18,19). next(19,20). next(20,21). next(7,22). next(22,23). next(23,24). next(24,25). next(25,26). next(26,27). next(27,28). next(28,29). next(29,30). next(30,31). next(31,32). next(32,33). next(33,34). next(34,35). next(35,36). next(36,37). next(34,38). next(38,39). next(39,40). next(40,41). next(25,42). next(42,43). next(43,44). next(44,45). next(45,46). next(46,47). next(47,48). next(48,49). next(49,50). next(50,51). next(51,52). next(52,53). next(53,54). next(54,55). next(55,56). next(53,57). next(57,58). next(58,59). next(59,60). next(24,61). next(61,62). next(62,63). next(63,64). next(64,65). next(65,66). next(66,67). next(67,68). next(68,69). next(69,70). next(70,71). next(71,72). next(72,73). next(73,74). next(74,75). next(72,76). next(76,77). next(77,78). next(78,79). doAt(startflow,6). doAt(a10,7). doAt(a16,9). doAt(a20,11). doAt(a19,13). doAt(a22,14). doAt(a11,15). doAt(endflow,16). doAt(a15,18). doAt(a5,19). doAt(endflow,20). doAt(a8,22). doAt(a25,24). doAt(a12,25). doAt(a9,27). doAt(a6,28). doAt(a3,30). doAt(a4,32). doAt(a19,33). doAt(a22,34). doAt(a11,35). doAt(endflow,36). doAt(a15,38). doAt(a5,39). doAt(endflow,40). doAt(a23,42). doAt(a24,44). doAt(a18,45). doAt(a1,46). doAt(a6,47). doAt(a3,49). doAt(a4,51). doAt(a19,52). doAt(a22,53). doAt(a11,54). doAt(endflow,55). doAt(a15,57). doAt(a5,58). doAt(endflow,59). doAt(a14,62). doAt(a21,64). doAt(a17,65). doAt(a13,66). doAt(a7,67). doAt(a6,68). doAt(a3,69). doAt(a4,70). doAt(a19,71). doAt(a22,72). doAt(a11,73). doAt(endflow,74). doAt(a15,76). doAt(a5,77). doAt(endflow,78). compAt(a16,x1,8). compAt(a19,x3,12). compAt(a16,x24,23). compAt(a19,x3,26). compAt(a16,x2,29). compAt(a19,x14,31). compAt(a20,x17,43). compAt(a16,x2,48). compAt(a19,x3,50). compAt(a19,x3,61). compAt(a20,x12,63). subsAt(a20,10). leftrightnexts(15,18). leftrightnexts(35,38). leftrightnexts(54,57). leftrightnexts(26,42). leftrightnexts(73,76). leftrightnexts(25,61). leftrightnexts(8,22).