Script for switch holding a and d

[rambo546677]

Ok hope u Guys can help me and understand waht i wanna do.
Basicly i want an Script that is holding the button a for 1sec, then let go this key and hold the button d instead for 1sec. And repeat this over and over again.
Im really new to AHK and it would be amazing if u Guys have any tips for me.

[Reloaded]

a::d