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(15,25). 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(14,37). next(37,38). next(38,39). next(39,40). next(40,41). next(41,42). 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(56,57). next(57,58). next(49,59). next(59,60). next(60,61). next(61,62). next(62,63). next(63,64). next(64,65). next(65,66). next(66,67). doAt(startflow,8). doAt(a2,11). doAt(a28,12). doAt(a10,13). doAt(a15,14). doAt(a3,15). doAt(a14,16). doAt(a30,17). doAt(a4,18). doAt(a5,19). doAt(a19,20). doAt(a7,21). doAt(a20,22). doAt(endflow,23). doAt(a23,25). doAt(a16,26). doAt(a22,27). doAt(a30,28). doAt(a4,29). doAt(a5,30). doAt(a19,32). doAt(a7,33). doAt(a20,34). doAt(endflow,35). doAt(a8,37). doAt(a27,38). doAt(a9,40). doAt(a12,41). doAt(a29,42). doAt(a18,43). doAt(a6,44). doAt(a1,45). doAt(a26,46). doAt(a17,47). doAt(a24,48). doAt(a21,49). doAt(a13,50). doAt(a30,51). doAt(a4,52). doAt(a5,53). doAt(a19,54). doAt(a7,55). doAt(a20,56). doAt(endflow,57). doAt(a11,59). doAt(a30,60). doAt(a4,61). doAt(a5,62). doAt(a19,63). doAt(a7,64). doAt(a20,65). doAt(endflow,66). compAt(a28,x32,9). compAt(a10,x17,10). compAt(a14,x10,31). compAt(a14,x10,39). leftrightnexts(16,25). leftrightnexts(50,59). leftrightnexts(15,37).