What are the 12 Days of Christmas notes on piano?

The notes for the 12 Days of Christmas on piano are as follows:

1st day: G Bb

2nd day: D F#

3rd day: G Bb D F#

4th day: G Bb C D E F#

5th day: G Bb C D E F# A

6th day: G Bb C D E F# G A B

7th day: G Bb C D E F# G A B C#

8th day: G Bb C D E F# G A B C# D

9th day: G Bb C D E F# G A B C# D E

10th day: G Bb C D E F# G A B C# D E F#

11th day: G Bb C D E F# G A B C# D E F# G

12th day: G Bb C D E F# G A B C# D E F# G A