1 files changed, 8 insertions, 1 deletions

diff --git a/subprojects/frontend/src/language/problem.grammar b/subprojects/frontend/src/language/problem.grammar
index 6fb188d8..58c398a3 100644
--- a/subprojects/frontend/src/language/problem.grammar
+++ b/subprojects/frontend/src/language/problem.grammar
@@ -57,7 +57,12 @@ Conjunction { ("," | Literal)+ }
 
 OrOp { ";" }
 
-Literal { Modality? NotOp? Modality? Atom ((":" | "=") LogicValue)? }
+Literal {
+  Modality? (
+    NotOp? Modality? Atom ((":" | "=") LogicValue)? |
+    ckw<"count"> "{" Modality? Atom "}" ComparisonOp int
+  )
+}
 
 Atom { RelationName "+"? ParameterList<Argument> }
 
@@ -141,6 +146,8 @@ sep1<separator, content> { content (separator content)* }
     "\"" (![\\"\n] | "\\" (![\n] | "\n"))* "\""
   }
 
+  ComparisonOp { ">" | ">=" | "<" | "<=" | "=:=" | "=!=" }
+
   NotOp { "!" }
 
   UnknownOp { "?" }