data/advent07.txt

   1 Step F must be finished before step R can begin.
   2 Step I must be finished before step P can begin.
   3 Step C must be finished before step O can begin.
   4 Step H must be finished before step K can begin.
   5 Step Y must be finished before step N can begin.
   6 Step M must be finished before step J can begin.
   7 Step D must be finished before step W can begin.
   8 Step B must be finished before step N can begin.
   9 Step T must be finished before step A can begin.
  10 Step R must be finished before step L can begin.
  11 Step P must be finished before step S can begin.
  12 Step O must be finished before step J can begin.
  13 Step X must be finished before step N can begin.
  14 Step A must be finished before step K can begin.
  15 Step N must be finished before step G can begin.
  16 Step W must be finished before step U can begin.
  17 Step Q must be finished before step U can begin.
  18 Step V must be finished before step U can begin.
  19 Step J must be finished before step G can begin.
  20 Step G must be finished before step S can begin.
  21 Step Z must be finished before step U can begin.
  22 Step U must be finished before step S can begin.
  23 Step E must be finished before step L can begin.
  24 Step K must be finished before step L can begin.
  25 Step L must be finished before step S can begin.
  26 Step M must be finished before step N can begin.
  27 Step T must be finished before step E can begin.
  28 Step J must be finished before step U can begin.
  29 Step G must be finished before step L can begin.
  30 Step D must be finished before step P can begin.
  31 Step T must be finished before step Z can begin.
  32 Step U must be finished before step L can begin.
  33 Step Z must be finished before step K can begin.
  34 Step Q must be finished before step V can begin.
  35 Step G must be finished before step K can begin.
  36 Step Z must be finished before step E can begin.
  37 Step Q must be finished before step Z can begin.
  38 Step J must be finished before step S can begin.
  39 Step G must be finished before step U can begin.
  40 Step I must be finished before step M can begin.
  41 Step W must be finished before step K can begin.
  42 Step Y must be finished before step V can begin.
  43 Step B must be finished before step Q can begin.
  44 Step Y must be finished before step D can begin.
  45 Step I must be finished before step G can begin.
  46 Step A must be finished before step S can begin.
  47 Step X must be finished before step S can begin.
  48 Step O must be finished before step N can begin.
  49 Step M must be finished before step X can begin.
  50 Step V must be finished before step Z can begin.
  51 Step W must be finished before step Z can begin.
  52 Step C must be finished before step L can begin.
  53 Step Q must be finished before step G can begin.
  54 Step A must be finished before step U can begin.
  55 Step G must be finished before step Z can begin.
  56 Step P must be finished before step Q can begin.
  57 Step C must be finished before step Z can begin.
  58 Step U must be finished before step K can begin.
  59 Step Q must be finished before step L can begin.
  60 Step X must be finished before step U can begin.
  61 Step A must be finished before step N can begin.
  62 Step N must be finished before step S can begin.
  63 Step Z must be finished before step L can begin.
  64 Step F must be finished before step D can begin.
  65 Step D must be finished before step A can begin.
  66 Step J must be finished before step K can begin.
  67 Step W must be finished before step Q can begin.
  68 Step T must be finished before step J can begin.
  69 Step T must be finished before step W can begin.
  70 Step E must be finished before step K can begin.
  71 Step P must be finished before step U can begin.
  72 Step O must be finished before step Z can begin.
  73 Step D must be finished before step B can begin.
  74 Step R must be finished before step J can begin.
  75 Step O must be finished before step A can begin.
  76 Step N must be finished before step E can begin.
  77 Step D must be finished before step G can begin.
  78 Step M must be finished before step Q can begin.
  79 Step F must be finished before step W can begin.
  80 Step T must be finished before step L can begin.
  81 Step U must be finished before step E can begin.
  82 Step X must be finished before step L can begin.
  83 Step M must be finished before step G can begin.
  84 Step Z must be finished before step S can begin.
  85 Step F must be finished before step Y can begin.
  86 Step N must be finished before step Z can begin.
  87 Step T must be finished before step U can begin.
  88 Step D must be finished before step O can begin.
  89 Step H must be finished before step X can begin.
  90 Step V must be finished before step E can begin.
  91 Step M must be finished before step T can begin.
  92 Step Y must be finished before step O can begin.
  93 Step P must be finished before step E can begin.
  94 Step C must be finished before step E can begin.
  95 Step P must be finished before step L can begin.
  96 Step M must be finished before step A can begin.
  97 Step F must be finished before step T can begin.
  98 Step I must be finished before step C can begin.
  99 Step X must be finished before step Z can begin.
 100 Step Y must be finished before step U can begin.
 101 Step B must be finished before step E can begin.