
This rhythm/strumming pattern is VERY difficult for most people. This was given to a student when he was nearing the end of his 16th note strumming work.
Not only is there a 4:3 polyrhythm being played (four chords evenly spaced across three beats), but there's also a polymeter going on. The strumming pattern begins again after three beats (in the first three bars). This basically fits the strumming pattern in a 3/4 time signature, while each bar is in a 4/4 time signature. This makes things EXTRA confusing!
The fourth bar completely breaks away from everything presented in the first three bars for added challenge.