I made a tool. That is supposed to do punches. But I can't make it shuffle through animations! Help?

Problem: I made a tool which is for combat. So every time you click it plays a punch animation. But I want it so that if you click you do a right punch. And if you click again you do a left punch. I don't know how to do this. Can someone help me?

Tool = script.Parent
Player = game.Players.LocalPlayer
PunchDebounce = true
Tool.CanBeDropped = false

Tool.Activated:connect(function()
	Tool.Enabled = true
	if not PunchDebounce then return end
	PunchDebounce = false
	local a = Player.Character.Humanoid:LoadAnimation(script["Punch R6"])
    a:Play()
    wait(.8)
    PunchDebounce = true
end)

You could do a function where the aniamtion plays and for example you change a value like

local punched = true

Then if that value is true then you play the left animation and change it back to false,if it isn't play the right animation