Step S must be finished before step G can begin. Step E must be finished before step T can begin. Step G must be finished before step A can begin. Step P must be finished before step Z can begin. Step L must be finished before step Z can begin. Step F must be finished before step H can begin. Step D must be finished before step Y can begin. Step J must be finished before step Y can begin. Step N must be finished before step O can begin. Step R must be finished before step Y can begin. Step Y must be finished before step W can begin. Step U must be finished before step T can begin. Step H must be finished before step W can begin. Step T must be finished before step Z can begin. Step Q must be finished before step B can begin. Step O must be finished before step Z can begin. Step K must be finished before step W can begin. Step M must be finished before step C can begin. Step A must be finished before step Z can begin. Step C must be finished before step X can begin. Step I must be finished before step V can begin. Step V must be finished before step W can begin. Step W must be finished before step X can begin. Step Z must be finished before step B can begin. Step X must be finished before step B can begin. Step D must be finished before step M can begin. Step S must be finished before step Z can begin. Step A must be finished before step B can begin. Step V must be finished before step Z can begin. Step Q must be finished before step Z can begin. Step O must be finished before step W can begin. Step S must be finished before step E can begin. Step L must be finished before step B can begin. Step P must be finished before step Y can begin. Step K must be finished before step M can begin. Step W must be finished before step Z can begin. Step Y must be finished before step Q can begin. Step J must be finished before step M can begin. Step U must be finished before step H can begin. Step Y must be finished before step U can begin. Step D must be finished before step A can begin. Step C must be finished before step V can begin. Step G must be finished before step J can begin. Step O must be finished before step C can begin. Step P must be finished before step H can begin. Step M must be finished before step B can begin. Step T must be finished before step C can begin. Step A must be finished before step W can begin. Step C must be finished before step B can begin. Step Q must be finished before step I can begin. Step O must be finished before step A can begin. Step N must be finished before step H can begin. Step Q must be finished before step C can begin. Step G must be finished before step W can begin. Step V must be finished before step X can begin. Step A must be finished before step V can begin. Step S must be finished before step C can begin. Step O must be finished before step M can begin. Step E must be finished before step L can begin. Step D must be finished before step V can begin. Step P must be finished before step N can begin. Step O must be finished before step I can begin. Step P must be finished before step K can begin. Step N must be finished before step A can begin. Step A must be finished before step X can begin. Step L must be finished before step A can begin. Step L must be finished before step T can begin. Step I must be finished before step X can begin. Step N must be finished before step C can begin. Step N must be finished before step W can begin. Step Y must be finished before step M can begin. Step R must be finished before step A can begin. Step O must be finished before step X can begin. Step G must be finished before step T can begin. Step S must be finished before step P can begin. Step E must be finished before step M can begin. Step E must be finished before step A can begin. Step E must be finished before step W can begin. Step F must be finished before step D can begin. Step U must be finished before step C can begin. Step R must be finished before step Z can begin. Step A must be finished before step C can begin. Step F must be finished before step K can begin. Step L must be finished before step V can begin. Step F must be finished before step T can begin. Step W must be finished before step B can begin. Step Y must be finished before step A can begin. Step D must be finished before step T can begin. Step S must be finished before step V can begin. Step Y must be finished before step O can begin. Step K must be finished before step B can begin. Step N must be finished before step V can begin. Step Y must be finished before step I can begin. Step Z must be finished before step X can begin. Step E must be finished before step B can begin. Step P must be finished before step O can begin. Step D must be finished before step R can begin. Step Q must be finished before step X can begin. Step E must be finished before step K can begin. Step J must be finished before step R can begin. Step L must be finished before step N can begin.