Step 1: The Split
The in put must split to make to paths also the signal can come from any where not just a button. it can come from as far as you want a long as it hits a repeater so it has power to get through the circuit.
Step 2: The Delay
The delay make with 2 Repeaters.
Step 3: They Come to Gather
Make them merge it should look like it dose in the pic.
Step 4: If It Wont Work
If it wont work you need to add a repeater to the free wire like in the pic.
The diode on he out put i also needed.