Provide the MISSING accidentals in ascending and descending order to complete the G Melodic Minor Scale. Use # for sharp, $x$ for double$-$sharp, $b$ for flat, bb for double$-$flat, and $N$ for natural, and separate each note with a comma and a space. For example: Db$,$ Eb$,$ Gb$,$ Ab$,$ Bb

G Melodic Minor