diff --git a/src/aoc_2024/day_2.gleam b/src/aoc_2024/day_2.gleam
index c879ade..e1527a6 100644
--- a/src/aoc_2024/day_2.gleam
+++ b/src/aoc_2024/day_2.gleam
@@ -39,7 +39,7 @@ pub fn pt_2(input: List(List(Int))) {
   input
   |> list.count(fn(line) {
     line
-    |> extra.selections
-    |> list.any(fn(selection) { is_ok(selection.1) })
+    |> list.combinations(list.length(line) - 1)
+    |> list.any(is_ok)
   })
 }
diff --git a/src/extra.gleam b/src/extra.gleam
index d3c9755..56dc8ce 100644
--- a/src/extra.gleam
+++ b/src/extra.gleam
@@ -50,11 +50,6 @@ pub fn remove_at(xs: List(a), at i: Int) -> List(a) {
   list.append(list.take(xs, i), list.drop(xs, i + 1))
 }
 
-/// selections([5,10,2]) -> [ #(5,[10,2]), #(10,[5,2]), #(2,[5,10]) ]
-pub fn selections(xs: List(a)) -> List(#(a, List(a))) {
-  list.index_map(xs, fn(x, i) { #(x, remove_at(xs, i)) })
-}
-
 pub fn yolo_int(x: String) -> Int {
   let assert Ok(n) = int.parse(x)
   n