diff --git a/day-16/two.go b/day-16/two.go
index 73d7212..a321b6f 100644
--- a/day-16/two.go
+++ b/day-16/two.go
@@ -36,6 +36,12 @@ func two(lines []string) int {
 			if n > res {
 				res = n
 			}
+		}(i)
+
+		wg.Add(1)
+		go func(x int) {
+			defer wg.Done()
+
 			n = spawn(x, len(lines[0])-1, N, lines)
 			if n > res {
 				res = n
@@ -52,6 +58,12 @@ func two(lines []string) int {
 			if n > res {
 				res = n
 			}
+		}(i)
+
+		wg.Add(1)
+		go func(y int) {
+			defer wg.Done()
+
 			n = spawn(len(lines[0])-1, y, W, lines)
 			if n > res {
 				res = n