What are the slide positions for happy birthday on trombone?

The slide positions to play "Happy Birthday" on the trombone are as follows:

B natural - 1st position

A - 2nd position

G sharp - 3rd position

A - 2nd position

G sharp - 3rd position

F sharp - 4th position

G sharp - 3rd position

A - 2nd position

G sharp - 3rd position

F sharp - 4th position

G sharp - 3rd position

E - 5th position

D sharp - 6th position

C sharp - 7th position

B natural - 1st position