diff --git a/src/Year_2018/files/P7.txt b/src/Year_2018/files/P7.txt
new file mode 100644
index 0000000..2be09bf
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+++ b/src/Year_2018/files/P7.txt
@@ -0,0 +1,101 @@
+Step T must be finished before step C can begin.
+Step V must be finished before step C can begin.
+Step Y must be finished before step H can begin.
+Step R must be finished before step U can begin.
+Step B must be finished before step J can begin.
+Step Q must be finished before step O can begin.
+Step W must be finished before step O can begin.
+Step S must be finished before step X can begin.
+Step I must be finished before step N can begin.
+Step X must be finished before step H can begin.
+Step M must be finished before step L can begin.
+Step A must be finished before step F can begin.
+Step G must be finished before step P can begin.
+Step U must be finished before step E can begin.
+Step Z must be finished before step E can begin.
+Step H must be finished before step L can begin.
+Step P must be finished before step C can begin.
+Step K must be finished before step F can begin.
+Step O must be finished before step C can begin.
+Step C must be finished before step F can begin.
+Step D must be finished before step L can begin.
+Step L must be finished before step F can begin.
+Step N must be finished before step E can begin.
+Step J must be finished before step F can begin.
+Step F must be finished before step E can begin.
+Step I must be finished before step A can begin.
+Step Z must be finished before step J can begin.
+Step I must be finished before step P can begin.
+Step T must be finished before step E can begin.
+Step R must be finished before step F can begin.
+Step U must be finished before step H can begin.
+Step K must be finished before step E can begin.
+Step D must be finished before step N can begin.
+Step U must be finished before step C can begin.
+Step D must be finished before step J can begin.
+Step N must be finished before step F can begin.
+Step C must be finished before step J can begin.
+Step U must be finished before step J can begin.
+Step A must be finished before step O can begin.
+Step H must be finished before step N can begin.
+Step P must be finished before step O can begin.
+Step I must be finished before step E can begin.
+Step G must be finished before step F can begin.
+Step O must be finished before step J can begin.
+Step Q must be finished before step F can begin.
+Step G must be finished before step J can begin.
+Step X must be finished before step E can begin.
+Step S must be finished before step D can begin.
+Step R must be finished before step P can begin.
+Step K must be finished before step L can begin.
+Step R must be finished before step Q can begin.
+Step L must be finished before step N can begin.
+Step Q must be finished before step C can begin.
+Step C must be finished before step D can begin.
+Step C must be finished before step N can begin.
+Step O must be finished before step E can begin.
+Step W must be finished before step F can begin.
+Step K must be finished before step D can begin.
+Step T must be finished before step H can begin.
+Step M must be finished before step D can begin.
+Step Y must be finished before step Z can begin.
+Step J must be finished before step E can begin.
+Step S must be finished before step F can begin.
+Step G must be finished before step U can begin.
+Step V must be finished before step S can begin.
+Step Y must be finished before step F can begin.
+Step G must be finished before step H can begin.
+Step T must be finished before step Q can begin.
+Step S must be finished before step U can begin.
+Step V must be finished before step D can begin.
+Step W must be finished before step M can begin.
+Step M must be finished before step E can begin.
+Step A must be finished before step H can begin.
+Step B must be finished before step F can begin.
+Step B must be finished before step N can begin.
+Step D must be finished before step F can begin.
+Step W must be finished before step K can begin.
+Step P must be finished before step E can begin.
+Step B must be finished before step X can begin.
+Step Q must be finished before step U can begin.
+Step Q must be finished before step X can begin.
+Step X must be finished before step N can begin.
+Step M must be finished before step Z can begin.
+Step G must be finished before step Z can begin.
+Step S must be finished before step G can begin.
+Step P must be finished before step F can begin.
+Step I must be finished before step O can begin.
+Step R must be finished before step A can begin.
+Step L must be finished before step J can begin.
+Step B must be finished before step I can begin.
+Step C must be finished before step E can begin.
+Step B must be finished before step W can begin.
+Step P must be finished before step N can begin.
+Step H must be finished before step C can begin.
+Step K must be finished before step J can begin.
+Step Y must be finished before step M can begin.
+Step Z must be finished before step P can begin.
+Step I must be finished before step K can begin.
+Step V must be finished before step E can begin.
+Step Y must be finished before step P can begin.
+Step T must be finished before step R can begin.