#include<iostream>
#include<set>
#include<map>
using namespace std;
int main()
{
int q;
cin>>q;
while(q--)
{
map<int,int>mp;
map<int,int>mp1;
set<int>s;
set<int>s1;
int n,m;
int cnt;
cin>>n>>m;
for(int i=0;i<n;i++)
{
int tmp;
cin>>tmp;
mp[tmp]++;
}
for(int i=0;i<m;i++)
{
int tmp1;
cin>>tmp1;
mp1[tmp1]++;
}
for(auto it:mp)
{
s.insert(it.first);
}
for(auto it1:mp1)
{
s1.insert(it1.first);
}
for(auto it2:s)
{
if(s1.find(it2)!=s1.end())
{
cnt++;
}
}
cout<<cnt;
}
return 0;
}
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}