I know I have the answer.

10/main.py

@@ -2,6 +2,7 @@
 
 from logging import debug, DEBUG, basicConfig
 from sys import argv
+from re import finditer
 
 
 class Manual:
@@ -10,24 +11,70 @@ class Manual:
         count_solution: str
         choices: list[str]
 
-        def Line(self, input_line: str):
+        def __init__(self, input_line: str):
             self.light_solution = input_line.split()[0][1:-1]
-            self.count_solution = input_line.split()[len(input_line) - 1][1:-1]
+            self.count_solution = "".join(
+                input_line.split()[len(input_line.split()) - 1][1:-1]
+            )
             self.choices = [x[1:-1] for x in input_line.split()[1:-1]]
             self.choices.sort(key=lambda x: len(x))
 
-        def find_solution(self):
+        def find_solution(self) -> list[int]:
-            return
+            debug("CURRENT CHOICES: %s", self.choices)
+            while self.count_solution != ",".join(["0" for _ in self.light_solution]):
+                # This needs to go back a step if we ever reach an empty best_options list...
+                # And iterate through the best options.
+                # This is probably best done with recursion.
+                debug("CURRENT COUNT: %s", self.count_solution)
+                minimum_value = str(
+                    min([int(x) for x in self.count_solution.split(",") if int(x)])
+                )
+                minimum_indexes = [
+                    str(i)
+                    for i, v in enumerate(self.count_solution.split(","))
+                    if v == minimum_value
+                ]
+                debug(minimum_indexes)
+                best_options = [
+                    len([v.string for v in c])
+                    for c in [
+                        finditer("|".join(minimum_indexes), c) for c in self.choices
+                    ]
+                ]
+                debug(best_options)
+                solved_indexes = [
+                    str(x)
+                    for x in range(len(self.count_solution.split(",")))
+                    if not int(self.count_solution.split(",")[x])
+                ]
+                debug(solved_indexes)
+                for i, _ in enumerate(best_options):
+                    for c in self.choices[i].split(","):
+                        if c in solved_indexes:
+                            best_options[i] = 0
+                debug(best_options)
+                current_choice = self.choices[best_options.index(max(best_options))]
+                debug(
+                    "CURRENT CHOICE: %s",
+                    current_choice,
+                )
+                for _ in range(int(minimum_value)):
+                    for c in current_choice.split(","):
+                        temp_count = self.count_solution.split(",")
+                        temp_count[int(c)] = str(int(temp_count[int(c)]) - 1)
+                        self.count_solution = ",".join(temp_count)
+
+            return []
 
     lines: list[Line]
 
-    def Manual(self):
+    def __init__(self):
         self.lines = []
 
 
 def parse_input(
     input_filepath: str,
-) -> list[list[str]]:
+) -> Manual:
 
     with open(file=input_filepath, mode="r") as input_file:
         input_data: list[str] = input_file.readlines()
@@ -35,9 +82,11 @@ def parse_input(
     debug(f"\n\nRAW INPUT: {input_data}\n\n")
 
     # Not even trying to be legible anymore.
-    output = [
+    # output = [
-        [segment[1:-1] for segment in line.strip().split()] for line in input_data
+    #     [segment[1:-1] for segment in line.strip().split()] for line in input_data
-    ]
+    # ]
+    output = Manual()
+    output.lines = [Manual.Line(l) for l in input_data]
     return output
 
 
@@ -79,12 +128,20 @@ def find_shortest_solutions(
 
 
 def main() -> None:
-    input_filepath = "input/test_manual.txt"
+    input_filepath = "input/manual.txt"
     input_manual = parse_input(input_filepath)
-    debug("MANUAL\n%s", input_manual)
+    debug(
-    shortest_solutions = find_shortest_solutions(input_manual)
+        "MANUAL\n%s",
-    debug(f"SHORTEST SOLUTIONS: {shortest_solutions}")
+        [
-    print(f"The sum of shortest solution is: {sum(shortest_solutions)}")
+            [line.light_solution, line.choices, line.count_solution]
+            for line in input_manual.lines
+        ],
+    )
+    for line in input_manual.lines:
+        line.find_solution()
+    # shortest_solutions = find_shortest_solutions(input_manual)
+    # debug(f"SHORTEST SOLUTIONS: {shortest_solutions}")
+    # print(f"The sum of shortest solution is: {sum(shortest_solutions)}")
     return