image/svg+xml(E, 0, 5) (E ::= E + • E ,0,2) (E, 2, 5) (E, 4, 5) (E ::= E + • E ,0,4) (E, 0, 1) (+, 1, 2) (1, 0, 1) (E ::= E + • E ,2,4) (E, 2, 3) (+, 3, 4) (1, 2, 3) (1, 4, 5) (E, 0, 3)