1 files changed, 24 insertions, 0 deletions

diff --git a/2021/12.in b/2021/12.in
new file mode 100644
index 0000000..e1a2275
--- /dev/null
+++ b/2021/12.in
@@ -0,0 +1,24 @@
+pf-pk
+ZQ-iz
+iz-NY
+ZQ-end
+pf-gx
+pk-ZQ
+ZQ-dc
+NY-start
+NY-pf
+NY-gx
+ag-ZQ
+pf-start
+start-gx
+BN-ag
+iz-pf
+ag-FD
+pk-NY
+gx-pk
+end-BN
+ag-pf
+iz-pk
+pk-ag
+iz-end
+iz-BN