Listen and Repeat With A and B
Listen Closely to each rhythm as it is played. It will always start on an A (open A string).
However the note might change during the rhythm from A to B (second fret). You will know its changed because the pitch will get higher.
Watch out for some of the later rhythms as the pitch might change back to an A again.
We have only written the rhythm for you, you will have to work out whether you are playing A or B for yourself.