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-rw-r--r--cannot_solve.md1
1 files changed, 1 insertions, 0 deletions
diff --git a/cannot_solve.md b/cannot_solve.md
index 6321a2e..1cabb4f 100644
--- a/cannot_solve.md
+++ b/cannot_solve.md
@@ -7,3 +7,4 @@
 - `(λa b. a a λc. b (c c c)) | (λa b. a a λc. b (c a))`
 - `(λa b. a a λc. b b b) | (λa b. a a λc. a a)`
 - `(λa b. a a λc. b (b c a)) | (λa b. a a λc. b (b a b))`
+- `(λa b. a a λc. a (a c) a) | (λa b. a a λc. a (a b) a)`