diff --git a/chainify.py b/chainify.py
index 1b62627..5f53780 100644
--- a/chainify.py
+++ b/chainify.py
@@ -1,4 +1,4 @@
-dyads = "*+-/%"
+dyads = "*+-/%@"
 monads = list(map(chr, range(ord("A"), ord("Z") + 1)))
 nilads = "1234567890"
 
@@ -16,10 +16,12 @@ for char in source:
 
 exprs = []
 expr = []
-patterns = ["02", "10", "11", "12", "20", "21", "22"]
+patterns = ["020", "021", "022", "02", "10", "11", "12", "20", "21", "22",
+            "102", "110", "111", "112", "120", "121", "122",
+            "202", "210", "211", "212", "220", "221", "222"]
 pattern = ""
 while len(arities):
-    if pattern in patterns:
+    if pattern in patterns and pattern + str(arities[-1][0]) not in patterns:
         exprs += [pattern, expr]
         expr = []
         pattern = ""
@@ -28,9 +30,9 @@ while len(arities):
     expr.append(arities[-1][1])
     arities.pop()
 
-if not exprs and pattern in patterns:
-        exprs += [pattern, expr]
-        expr = []
-        pattern = ""
+if expr and pattern in patterns:
+    exprs += [pattern, expr]
+    expr = []
+    pattern = ""
 
 print(exprs)