#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
using namespace __gnu_pbds; 
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
#define FAST std::ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define pi       acos(-1)
#define mp make_pair
#define pb push_back
#define ALL(v) v.begin(), v.end()
#define SORT(v) sort(ALL(v))  
#define REVERSE(v) reverse(ALL(v))
#define F first
#define S second
#define ppb pop_back
#define GCD(m,n) __gcd(m,n)
#define LCM(m,n) (m*n)/GCD(m,n)
#define rep(i,a,n)  for(int i=a ; i<n ; i++)
#define repe(i,a,n) for(int i=a;i<=n;i++)
#define rev(i,a,b) for(int i=a;i>=b;i--)
////-------------------------------------------------------------------------
#define ld long double 
#define int long long ////////////
////define ll long long
////--------------------------------------------------------------------------
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<vvvi> vvvvi;
typedef vector<char> vc;
typedef vector<vc> vvc;
typedef vector<vvc> vvvc;
typedef vector<pii > vpii;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef map<int,int> mii;
typedef unordered_map<int,int> umii;
typedef map<char,int> mci;
////--------------------------------------------------------------------------
#define itv for(auto it= v.begin(); it != v.end(); ++it )
#define present(container, element) (container.find(element) != container.end())
#define cpresent(container, element) (find(ALL(container),element) != container.end())
#define   bs binary_search
#define  lb(v,val)  lower_bound(ALL(v), val)
#define  ub(v,val)  upper_bound(ALL(v), val)
#define Max(x,y,z) max(x,max(y,z))
#define Min(x,y,z) min(x,min(y,z))
#define maxc(v) *max_element(ALL(v))
#define minc(v) *min_element(ALL(v))
#define isvowel(a) (a=='a'||a=='e'||a=='i'||a=='o'||a=='u')
////--------------------------------------------------------------------------
 /*
#define dbg1(a) cout<<" *"<<a<<" ";
#define dbg2(a,b) cout<<" *"<<a<<" **"<<b<<" "     /////
#define dbg cout<<"move"
*/
#define nl "\n"
#define vin(v,n)   vi v(n); rep(i,0,n)  cin>>v[i]
#define dbg cerr <<"At line "<<__LINE__<<" move "<<nl
#define dbg1(x) cerr <<"At line "<<__LINE__<<" "<<#x<<"="<<x<<nl
#define dbg2(x,y) cerr <<"At line "<<__LINE__<<" "<<#x<<"="<<x<<" "<<#y<<"="<<y<<nl
#define dbg3(x,y,z) cerr <<"At line "<<__LINE__<<" "<<#x<<"="<<x<<" "<<#y<<"="<<y<<" "<<#z<<"="<<z<<nl
#define prv(v)     rep(i,0,sz(v))  cerr<<v[i]<<" "; cerr<<endl
#define sz(s)         (int)((s).size())
#define coutsp(k)   cout<<setprecision(k)  //set precision (total length k icluding decimal and non decimal)
#define coutfsp(k)   cout<<fixed<<setprecision(k)  //fixed set precision(after decimal fixing)
#define trav(a, x) for(auto& a : x)
#define display(x) trav(a,x) cout<<a<<" ";cout<<endl
#define displaycerr(x) trav(a,x) cerr<<a<<" ";cerr<<endl

#define MOD 1000000007   
#define POD 998244353    
#define INF   (int)1e18   //------
//-------------------------------------------------------------------------------------------------
int h,w,k; 
int ans=0;

 int a[6][6];

 // map<pair<vi,vi>,int>  vis;
//--------------------------------Global VARIABLE--------------------------------------------------

int recurso(int r1, int c1 , vi rs, vi cs )
{
   

  if(r1==0&&c1==0)
  {
    SORT(rs); SORT(cs);

    int b[h][w];  rep(i,0,h) rep(j,0,w) b[i][j]=a[i][j];

    rep(i,0,sz(rs))
    {
       rep(i1,0,w)  b[rs[i]][i1]=2;
    }

    rep(i,0,sz(cs))
    {
       rep(i1,0,h)  b[i1][cs[i]]=2;
    }

    int co=0;

    rep(i,0,h)
    rep(j,0,w)
     if(b[i][j]==1)
      co++;

    if(co==k)
      ans++;

   // vis[mp(rs,cs)]=1;

   return 1;
  }

  if(r1>0)
  {
   recurso(r1-1,c1,rs,cs);
   rs.pb(r1-1);
   recurso(r1-1,c1,rs,cs);
  }
  else
  {
   recurso(r1,c1-1,rs,cs);
   cs.pb(c1-1);
   recurso(r1,c1-1,rs,cs);
  }

  return 1;

}

//-------------------------------------------------------------------------------
void do2win(int &test)
{
 cin>>h>>w>>k;

  rep(i,0,h)
  rep(j,0,w) 
  { char c;  cin>>c;
    if(c=='.')
      a[i][j]=0;
     else
      a[i][j]=1;
  }

   vi rs,cs;

  int k=recurso(h,w,rs,cs);

  cout<<ans;

}
//-------------------------------------------------------------------------------
 
signed main()
{

 

   // #ifndef ONLINE_JUDGE
   //  cerr<<(1000*clock())/CLOCKS_PER_SEC<<"ms";
   // #endif      

///+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   FAST; 
// cout<<fixed<<setprecision(20);
///+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   
   int test;  test=1;    
///////---------------------------------|||||
            // cin>>test;        ////////>>>>>>>
//////----------------------------------|||||

    for(int i=1;i<=test;i++)
    {
       // cout<<"Case #"<<i<<": ";

      do2win(i);
      cout<<nl;   //  IMPORTANT FOR NEXT LINE     
    }

   return 0;
}


Measured memory_bytes: 3656