Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When you Normal Summon an "Alien" monster, you can Special Summon this card from your hand. When you do, place 2 A-Counters on face-up monster(s) your opponent controls.
--エーリアン・ドッグ
--Alien Dog
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon this card from your hand
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.spcon)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--Place 2 counters on face-up monster(s) your opponent controls
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_COUNTER)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	e2:SetCondition(s.ctcon)
	e2:SetOperation(s.ctop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_ALIEN}
s.counter_place_list={COUNTER_A}
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return ep==tp and eg:GetFirst():IsSetCard(SET_ALIEN)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,1,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,tp,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	Duel.SpecialSummon(c,1,tp,tp,false,false,POS_FACEUP)
end
function s.ctcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetSummonType()==SUMMON_TYPE_SPECIAL+1
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	if #g==0 then return end
	if #g==1 then
		g:GetFirst():AddCounter(COUNTER_A,2)
	else
		for i=1,2 do
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_COUNTER)
			local sg=g:Select(tp,1,1,nil)
			sg:GetFirst():AddCounter(COUNTER_A,1)
		end
	end
end