// dfmt off
T lread(T=long)(){return readln.chomp.to!T;}T[] lreads(T=long)(long n){return iota(n).map!((_)=>lread!T).array;}
T[] aryread(T=long)(){return readln.split.to!(T[]);}void arywrite(T)(T a){a.map!text.join(' ').writeln;}
void scan(L...)(ref L A){auto l=readln.split;foreach(i,T;L){A[i]=l[i].to!T;}}alias sread=()=>readln.chomp();
void dprint(L...)(lazy L A){debug{auto l=new string[](L.length);static foreach(i,a;A)l[i]=a.text;arywrite(l);}}
static immutable MOD=10^^9+7;alias PQueue(T,alias l="b<a")=BinaryHeap!(Array!T,l);import std;
// dfmt on

void main()
{
    long H, W, K;
    scan(H, W, K);
    auto C = new string[](H);
    foreach (i; 0 .. H)
        C[i] = sread();
    char[][] f(uint h, uint w)
    {
        auto ret = new char[][](H, W);
        foreach (i; 0 .. H)
            foreach (j; 0 .. W)
            {
                if ((h & (1 << i)) || (w & (1 << j)))
                {
                    ret[i][j] = 'r';
                }
                else
                {
                    ret[i][j] = C[i][j];
                }
            }
        return ret;
    }

    long eval(char[][] s)
    {
        long ret;
        foreach (i; 0 .. H)
            foreach (j; 0 .. W)
                ret += s[i][j] == '#';
        return ret;
    }

    long ans;
    foreach (i; 0 .. 1 << H)
        foreach (j; 0 .. 1 << W)
        {
            auto s = f(i, j);
            if (eval(s) == K)
                ans++;
        }
    writeln(ans);
}
