diff --git a/latticejson/madx.lark b/latticejson/madx.lark
index 4679f99..bbaa152 100644
--- a/latticejson/madx.lark
+++ b/latticejson/madx.lark
@@ -12,17 +12,19 @@ string      : ESCAPED_STRING
 word        : /[\w\.]+/
 
 start       : (_statement ";")*
-_statement  : element | lattice | command | assignment
+_statement  : element | lattice | sequence | command | assignment
 
 element     : word ":" [word] ("," attribute)* ","?
 attribute   : word ("=" | ":=") (expr | string)
 
-
 lattice     : word ":" "LINE"i "=" arrangement
 arrangement : [int "*"] [/-/] "(" object ("," object)* ")"
 ?object     : ref_name | arrangement
 ref_name    : [int "*"] [/-/] word
 
+sequence    : word ":" "SEQUENCE"i ("," attribute)* ";" seq_elements "ENDSEQUENCE"i
+seq_elements: (element ";")*
+
 command     : word ("," (word | string | attribute))*
 
 // Arithmeitc Expressions
diff --git a/latticejson/parse.py b/latticejson/parse.py
index b97245c..cdbee02 100644
--- a/latticejson/parse.py
+++ b/latticejson/parse.py
@@ -90,7 +90,8 @@ def transform(self, tree):
     string = lambda self, item: item[1:-1]
 
     def element(self, name, type_, *attributes):
-        self.elements[name.lower()] = type_.lower(), dict(attributes)
+        self.elements[name.upper()] = type_.upper(), dict(attributes)
+        return name
 
     def attribute(self, name, value):
         return name.lower(), value
@@ -150,7 +151,12 @@ def command(self, *items):
 
 @v_args(inline=True)
 class MADXTransformer(ArithmeticTransformer, AbstractLatticeFileTransformer):
-    pass
+    def sequence(self, name, *items):
+        *attributes, elements = items
+        self.lattices[name.upper()] = elements
+
+    def seq_elements(self, *elements):
+        return list(elements)
 
 
 @v_args(inline=True)