Adding delay for repeating loop

I have a simple Material Graph for a constantly pulsing light.

I need to modify it so that after 2 pulses there is a delay before the next 2 pulses, etc.

Not sure how I would modify the graph to add a delay (attached).


You can have two sines. One controls the pulsing, and the other controls the degree of the pulse.

Period on second sine is twice that of the first.