<?xml version="1.0" encoding="UTF-8"?><structure><type>grammar</type><production><left>S</left><right>EBCA</right></production><production><left>A</left><right>aAa</right></production><production><left>A</left><right>λ</right></production><production><left>B</left><right>bB</right></production><production><left>B</left><right>λ</right></production><production><left>C</left><right>B</right></production><production><left>D</left><right>AB</right></production><production><left>E</left><right>a</right></production></structure>