diff --git a/engine-proto/gram-test/irisawa-hexlet.jl b/engine-proto/gram-test/irisawa-hexlet.jl
index 8b43ad4..67def8c 100644
--- a/engine-proto/gram-test/irisawa-hexlet.jl
+++ b/engine-proto/gram-test/irisawa-hexlet.jl
@@ -28,14 +28,14 @@ for s in 1:9
   end
   
   if s > 3
-    # each chain sphere is externally tangent to the two nucleus spheres
+    # each chain sphere is externally tangent to the "sun" and "moon" spheres
     for n in 2:3
       append!(J, [s, n])
       append!(K, [n, s])
       append!(values, [-1, -1])
     end
     
-    # each chain sphere is externally tangent to the next sphere in the chain
+    # each chain sphere is externally tangent to the next chain sphere
     s_next = 4 + mod(s-3, 6)
     append!(J, [s, s_next])
     append!(K, [s_next, s])