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(26,27). next(27,28). next(25,29). next(29,30). next(30,31). next(31,32). next(24,33). next(33,34). next(34,35). next(22,36). next(36,37). next(37,38). next(38,39). next(39,40). next(40,41). next(41,42). next(39,43). next(43,44). next(44,45). next(45,46). next(38,47). next(47,48). next(48,49). next(17,50). 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(60,61). next(61,62). next(62,63). next(63,64). next(64,65). next(65,66). next(63,67). next(67,68). next(68,69). next(69,70). next(62,71). next(71,72). next(72,73). next(60,74). next(74,75). next(75,76). next(76,77). next(77,78). next(78,79). next(79,80). next(77,81). next(81,82). next(82,83). next(83,84). next(76,85). next(85,86). next(86,87). doAt(startflow,8). doAt(a19,10). doAt(a23,11). doAt(a22,13). doAt(a18,14). doAt(a2,15). doAt(a20,16). doAt(a4,17). doAt(a11,18). doAt(a28,19). doAt(a16,20). doAt(a17,21). doAt(a1,22). doAt(a14,23). doAt(a13,24). doAt(a24,25). doAt(a29,26). doAt(endflow,27). doAt(a26,29). doAt(a7,30). doAt(endflow,31). doAt(a3,33). doAt(endflow,34). doAt(a5,36). doAt(a9,37). doAt(a13,38). doAt(a24,39). doAt(a29,40). doAt(endflow,41). doAt(a26,43). doAt(a7,44). doAt(endflow,45). doAt(a3,47). doAt(endflow,48). doAt(a10,50). doAt(a12,51). doAt(a6,52). doAt(a21,53). doAt(a30,54). doAt(a8,55). doAt(a15,56). doAt(a27,57). doAt(a16,58). doAt(a17,59). doAt(a1,60). doAt(a14,61). doAt(a13,62). doAt(a24,63). doAt(a29,64). doAt(endflow,65). doAt(a26,67). doAt(a7,68). doAt(endflow,69). doAt(a3,71). doAt(endflow,72). doAt(a5,74). doAt(a9,75). doAt(a13,76). doAt(a24,77). doAt(a29,78). doAt(endflow,79). doAt(a26,81). doAt(a7,82). doAt(endflow,83). doAt(a3,85). doAt(endflow,86). compAt(a20,x14,9). subsAt(a22,12). leftrightnexts(26,29). leftrightnexts(25,33). leftrightnexts(40,43). leftrightnexts(39,47). leftrightnexts(23,36). leftrightnexts(64,67). leftrightnexts(63,71). leftrightnexts(78,81). leftrightnexts(77,85). leftrightnexts(61,74). leftrightnexts(18,50).