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(17,18). next(18,19). next(19,20). next(20,21). next(21,22). next(22,23). next(23,24). next(24,25). next(25,26). next(23,27). next(27,28). next(28,29). next(29,30). next(18,31). next(31,32). next(32,33). next(33,34). next(34,35). next(35,36). next(36,37). next(37,38). next(38,39). next(39,40). next(40,41). next(38,42). next(42,43). next(43,44). next(44,45). next(12,46). 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(56,57). next(57,58). next(58,59). next(59,60). next(57,61). next(61,62). next(62,63). next(63,64). next(52,65). 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,5). doAt(a15,7). doAt(a10,10). doAt(a4,11). doAt(a8,12). doAt(a19,13). doAt(a2,14). doAt(a12,15). doAt(a22,16). doAt(a1,17). doAt(a17,18). doAt(a3,19). doAt(a24,20). doAt(a11,21). doAt(a18,22). doAt(a6,23). doAt(a16,24). doAt(endflow,25). doAt(a13,27). doAt(a20,28). doAt(endflow,29). doAt(a14,31). doAt(a5,32). doAt(a21,33). doAt(a25,34). doAt(a24,35). doAt(a11,36). doAt(a18,37). doAt(a6,38). doAt(a16,39). doAt(endflow,40). doAt(a13,42). doAt(a20,43). doAt(endflow,44). doAt(a23,46). doAt(a9,47). doAt(a2,48). doAt(a12,49). doAt(a22,50). doAt(a1,51). doAt(a17,52). doAt(a3,53). doAt(a24,54). doAt(a11,55). doAt(a18,56). doAt(a6,57). doAt(a16,58). doAt(endflow,59). doAt(a13,61). doAt(a20,62). doAt(endflow,63). doAt(a14,65). doAt(a5,66). doAt(a21,67). doAt(a25,68). doAt(a24,69). doAt(a11,70). doAt(a18,71). doAt(a6,72). doAt(a16,73). doAt(endflow,74). doAt(a13,76). doAt(a20,77). doAt(endflow,78). compAt(a15,x21,6). compAt(a10,x8,9). subsAt(a10,8). leftrightnexts(24,27). leftrightnexts(39,42). leftrightnexts(19,31). leftrightnexts(58,61). leftrightnexts(73,76). leftrightnexts(53,65). leftrightnexts(13,46).