Ahk script cycle 1 2 3 fo T-Stone macro pls help

Hey GUys, I rlly want to play Enhancement shaman but struggle to create a AHK script.
Maybe you can help me. What i want is, that if press my Mousebutton 4 that it press 1 sleep 25 then press 2 sleep 25 then press 3 sleep 25 then go back to 1 etc.

pls help me

My best advise to you, play some other spec or class, as for the script you are asking for will guarantee you a ban. Best of luck