#include<bits/stdc++.h>
 
using namespace std;
 
char str[103][103],dir[50009];
 
int main()
{
    int r,c,koyta,i,j,a,b,x,y,k,counter;
 
    while(scanf("%d%d%d",&r,&c,&koyta)&&(r|c|koyta))
    {
        getchar();
 
        for(i=0; i<r; i++)
        {
            gets(str[i]);
        }
 
        gets(dir);
 
        bool tag = false;
        counter = 0;
 
        for(i=0; i<r; i++)
        {
            for(j=0; j<c; j++)
            {
                if(str[i][j]>='L' && str[i][j]<='S')
                {
                    tag = true;
                    x = i;
                    y = j;
                    break;
                }
            }
            if(tag)break;
        }
        if(str[x][y]=='N')
        {
            if(x-1>=0 && x-1<r)
                a = x-1;
            b = y;
            k=1;
        }
        else if(str[x][y]=='S')
        {
            if(x+1>=0 && x+1<r)
                a = x+1;
            b = y;
            k=2;
        }
        else if(str[x][y]=='L')
        {
            a = x;
            if(y+1>=0 && y+1<c)
                b = y+1;
            k=3;
        }
        else if(str[x][y]=='O')
        {
            a = x;
 
            if(y-1>=0 && y-1<c)
                b = y-1;
            k=4;
        }
 
        str[x][y] = '.';
 
        for(i=0; i<koyta; i++)
        {
            if(dir[i]=='D')
            {
                if(k==1)
                {
                    a = x;
                    if(b+1>=0 && b+1<c)
                        b = y+1;
                    k=3;
                }
                else if(k==2)
                {
                    a = x;
                    if(b-1>=0 && b-1<c)
                        b = y-1;
                    k=4;
                }
                else if(k==3)
                {
                    if(a+1>=0 && a+1<r)
                        a = x+1;
                    b = y;
                    k=2;
                }
                else if(k==4)
                {
                    if(a-1>=0 && a-1<r)
                        a = x-1;
                    b = y;
                    k=1;
                }
            }
            else if(dir[i]=='E')
            {
                if(k==1)
                {
                    a = x;
                    if(b-1>=0 && b-1<c)
                        b = y-1;
                    k=4;
                }
                else if(k==2)
                {
                    a = x;
                    if(b+1>=0 && b+1<c)
                        b = y+1;
                    k=3;
                }
                else if(k==3)
                {
                    if(a-1>=0 && a-1<r)
                        a = x-1;
                    b = y;
                    k=1;
                }
                else if(k==4)
                {
                    if(a+1>=0 && a+1<r)
                        a = x+1;
                    b = y;
                    k=2;
                }
            }
            else if(dir[i]=='F')
            {
                if(str[a][b]=='*')
                {
                    counter++;
 
                    str[a][b] = '.';
 
                    x=a;
                    y=b;
 
                    if(k==1)
                    {
                        if(x-1>=0 && x-1<r)
                            a = x-1;
                        b = y;
                    }
                    else if(k==2)
                    {
                        if(x+1>=0 && x+1<r)
                            a = x+1;
                        b = y;
                    }
                    else if(k==3)
                    {
                        a = x;
                        if(y+1>=0 && y+1<c)
                            b = y+1;
                    }
                    else if(k==4)
                    {
                        a = x;
 
                        if(y-1>=0 && y-1<c)
                            b = y-1;
                    }
                }
                else if(str[a][b]=='.')
                {
                    x = a;
                    y = b;
                    if(k==1)
                    {
                        if(x-1>=0 && x-1<r)
                            a = x-1;
                        b = y;
                    }
                    else if(k==2)
                    {
                        if(x+1>=0 && x+1<r)
                            a = x+1;
                        b = y;
                    }
                    else if(k==3)
                    {
                        a = x;
                        if(y+1>=0 && y+1<c)
                            b = y+1;
                    }
                    else if(k==4)
                    {
                        a = x;
 
                        if(y-1>=0 && y-1<c)
                            b = y-1;
                    }
                }
            }
        }
 
        printf("%d\n",counter);
 
        memset(str,'\0',sizeof str);
 
    }
 
    return 0;
}