(	<PROGRAM>
|	<USES>
|	<VAR>
|	<BEGIN>
|	<END>
|	<PROCEDURE>
|	<FUNCTION>
|	<INTEGER>
|	<REAL>
|	<CHAR>
|	<BYTE>
|	<STRING>
|	<REPEAT>
|	<UNTIL>
|	<FOR>
|	<IF>
|	<TO>
|	<DO>
|	<THEN>
|	<ELSE>
|	<CASE>
|	<OF>
|	<TWODOTS>
|	<ATRIB>
|	<ARRAY>
|	<FUNC_WRITE>
|	<FUNC_WRITELN>
|	<FUNC_READ>
|	<FUNC_READLN>
|	<FUNC_LENGTH>
|	<DOT>
|	<ID>
|	<SEMICOLON>
|	<OP>
|	<COMMA>
|	<LBRACKET>
|	<RBRACKET>
|	<NUM_INT>
|	<NUM_REAL>
|	<LITERAL>
|	<OPEN_PAR>
|	<CLOSE_PAR>
|	<WHILE>)*