diff --git a/numbers.md b/numbers.md
index 7d08e3234..c399c3287 100644
--- a/numbers.md
+++ b/numbers.md
@@ -5,4 +5,4 @@
 - #3 [[merge]], a [[triangle]]
 - #4 [[2 2]], two [[forks]]
 - #5 [[light]], as in a [[die]]
-- #6 [[2 3]], [[fork]] then [[merge]]
+- #6 [[2 3]], [[fork]] then [[merge]], [[x with y]]