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(10,14).
next(14,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(15,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(7,30).
next(30,31).
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(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(58,59).
next(59,60).
next(57,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(62,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
doAt(startflow,6).
doAt(a19,7).
doAt(a38,8).
doAt(a16,9).
doAt(a18,10).
doAt(a23,11).
doAt(endflow,12).
doAt(a40,14).
doAt(a30,15).
doAt(a11,16).
doAt(a37,17).
doAt(a14,18).
doAt(a35,19).
doAt(endflow,20).
doAt(a20,22).
doAt(a4,23).
doAt(a8,24).
doAt(a37,25).
doAt(a14,26).
doAt(a35,27).
doAt(endflow,28).
doAt(a29,30).
doAt(a21,31).
doAt(a12,32).
doAt(a36,33).
doAt(a28,34).
doAt(a3,36).
doAt(a32,37).
doAt(a33,38).
doAt(a22,39).
doAt(a15,40).
doAt(a1,41).
doAt(a9,42).
doAt(a17,43).
doAt(a27,44).
doAt(a26,45).
doAt(a25,46).
doAt(a39,47).
doAt(a31,48).
doAt(a5,49).
doAt(a10,50).
doAt(a7,51).
doAt(a13,52).
doAt(a34,53).
doAt(a6,54).
doAt(a24,55).
doAt(a16,56).
doAt(a18,57).
doAt(a23,58).
doAt(endflow,59).
doAt(a40,61).
doAt(a30,62).
doAt(a11,63).
doAt(a37,64).
doAt(a14,65).
doAt(a35,66).
doAt(endflow,67).
doAt(a20,69).
doAt(a4,70).
doAt(a8,71).
doAt(a37,72).
doAt(a14,73).
doAt(a35,74).
doAt(endflow,75).
compAt(a16,x18,35).
leftrightnexts(16,22).
leftrightnexts(11,14).
leftrightnexts(63,69).
leftrightnexts(58,61).
leftrightnexts(8,30).