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-rw-r--r--cannot_solve.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/cannot_solve.md b/cannot_solve.md
index 73ccfb9..cd6328c 100644
--- a/cannot_solve.md
+++ b/cannot_solve.md
@@ -21,3 +21,7 @@
 - `(λa b. a λc. c b b) | (λa b. a λc. c b)`
 - `(λa b. a λc. c c a) | (λa b. a λc. c c b)`
 - `(λa b. a λc. c c b) | (λa b. a (b b))`
+- `(λa b. a (λc. b a a) a) | (λa b. a (λc. b c) a)`
+- `(λa b. a (λc. b (a b) a) a) | (λa b. a (λc. b (a a) a) a)`
+- `(λa b. a λc. b c) | (λa b. a λc. b a a)`
+- `(λa b. a (a b b) a) | (λa b. a (λc. b c b) a)`