#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
using ll=long long;
using pii=pair<int,int>;
using vi=vector<int>;
using vl=vector<ll>;
#define pb push_back
#define all(a) begin(a),end(a)

const int N=1010,MOD=1e9+7;
const char en='\n';
const ll LLINF=1ll<<60;
const int dx[]={0,1,0,-1};
const int dy[]={1,0,-1,0};

int t,n,m,co[N][N];
bool bio[N][N];
string h[N];
vector<pii> cu;

void dfs(int i,int j)
{
	cu.pb({i,j});
	bio[i][j]=1;
	for (int k=0;k<4;++k)
	{
		int i1=i+dx[k],j1=j+dy[k];
		if (i1<0 || j1<0 || i1>=n || j1>=m || h[i1][j1]=='O' || bio[i1][j1]) continue;
		dfs(i1,j1);
	}
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin>>t;
	while (t--)
	{
		cin>>n>>m;
		for (int i=0;i<n;++i) cin>>h[i];
		for (int i=0;i<n;++i) for (int j=0;j<m;++j) bio[i][j]=0;
		vector<vector<pii>> comps;
		for (int i=0;i<n;++i) for (int j=0;j<m;++j) if (!bio[i][j] && h[i][j]=='.')
		{
			cu.clear();
			dfs(i,j);
			for (auto x: cu) co[x.x][x.y]=cu.size();
			comps.pb(cu);
		}
		int an=0;
		for (auto x: comps)
		{
			bool ok=1;
			for (auto y: comps) if (y!=x)
			{
				int ind=co[y[0].x][y[0].y];
				bool sub=0;
				for (auto z: y)
				{
					int offx=z.x-x[0].x,offy=z.y-x[0].y;
					bool csub=1;
					for (auto w: x) if (co[offx+w.x][offy+w.y]!=ind) csub=0;
					if (csub) sub=1;
				}
				if (sub) ok=0;
			}
			if (ok) an+=x.size();
		}
		cout<<an<<en;
	}
}