Stroke #1 Flick of the index finger nail (right hand)
Stroke #2 and 3 left hand standard split finger (index to ring)
Stroke #4 same as stroke #1
Stroke #5 index finger (left hand)
Stroke #6 Thumb in "doum" position
Stroke #7 pop technique, right hand mutes left hand ring handles the "ka" stroke.
Video link here http://www.youtube.com/watch?v=tWzXHjGuf5M