aoqi@0: SyntaxError:33:Expected l-value but found +
aoqi@0: ++ +3
aoqi@0:    ^
aoqi@0: SyntaxError:33:Expected l-value but found -
aoqi@0: ++ -7
aoqi@0:    ^
aoqi@0: SyntaxError:33:Expected l-value but found +
aoqi@0: -- +2
aoqi@0:    ^
aoqi@0: SyntaxError:33:Expected l-value but found -
aoqi@0: -- -8
aoqi@0:    ^