Rock paradiddle lesson 2 will help you in playing all combinations of the following 2/4 measures.

Rock paradiddle 1
Rock paradiddle 6
Rock paradiddle 9

The patterns are based on the first paradiddle: RLRR LRLL. Right hand plays ride (or alters between ride/snare), left hand alters between hi-hat/snare.
Go to the paradiddles overview page to view all 2/4 paradiddle combinations.