diff --git a/tools/grammarcheckers/grammarchecker.cg3 b/tools/grammarcheckers/grammarchecker.cg3
index 8d49ca087..fec31afe2 100644
--- a/tools/grammarcheckers/grammarchecker.cg3
+++ b/tools/grammarcheckers/grammarchecker.cg3
@@ -3457,6 +3457,8 @@ ADD:num-phrase  (&LINK)  TARGET (*) IF (r:NP-AFTER-NUM (&msyn-numeral-attr));
 		# ----------------
 		# ADDRELATIONS (name) (name) targetset (-1* ("someword"))
 		#        TO (1* (@candidate)) (2 SomeSet) ;
+		# ADDRELATION (DELETE1) DeleteThisWord TO (-1 KeepThisWord);
+		# ADD (&COERROR &one-word-too-many) DeleteThisWord IF (1 KeepThisWord);
 
 
     # homonomy beetween pl ine and sg com