{
    (_mul)(_zq)(_lb)(_halve)(_1)
        /(exp)
            (_e)
                /
                    { /</[_e][_halve]>[exp] | _hexp}
                    (_x)
                        /
                            /
                                [_1]
                            /
                                [_x]
                            /[_e][_lb]
                        /
                            { /[_x][_hexp] | _hexpx }
                            /
                                [_hexpx]
                            /
                                [_hexpx]
                            [_mul]
                        [_mul]
                /
                    (_x)
                        [_1]
                /[_e][_zq]
        [YC]
|
    _exp
}