Expression
|	Expression `&lt;&lt;` Expression
|	Expression `&gt;&gt;' Expression
|	Expression `&gt;&gt;&gt;' Expression
|	Expression `=' Expression
|	Expression `+=' Expression
|	Expression `-=' Expression
|	Expression `*=' Expression
|	Expression `/=' Expression
|	Expression `%=' Expression
|	Expression `^=' Expression
|	Expression `&amp;=' Expression
|	Expression `|=' Expression
|	Expression `&lt;&lt;=' Expression
|	Expression `&gt;&gt;=' Expression
|	Expression `&gt;&gt;&gt;=' Expression
|	Expression `&l