#include <iostream>

using namespace std;

class square
{
public:
	char type;
	int angle;
	int rule;
};

bool exists(int height, int width, int x, int y)
{
	if(x < 0 || x >= height || y < 0 || y >= width)
		return false;
	return true;
}

bool check(square** data, int height, int width, int x, int y, char* rules, int numrules)
{
	for(int i = 0; i < height; i++)
	{
		for(int j = 0; j < width; j++)
		{
			data[i][j].angle = -1;
			data[i][j].rule = -1;
		}
	}
	
	//top . 0
	int currule = 0;
	int angle = 0;
	while(true)
	{
		char rule = rules[currule];
		
		//cout << "rule: " << rule << ", angle: " << angle  << endl;
		if(rule == 'L')
		{
			angle -= 1;
			if(angle < 0)
				angle = 3;
		}
		else if(rule == 'R')
		{
			angle += 1;
			angle %= 4;
		}
		else
		{
			//step
			int newx = x, newy = y;
			if(angle == 0)
			{
				if(exists(height, width, x - 1, y))
				{
					newx = x - 1;
				}
			}
			else if(angle == 1)
			{
				if(exists(height, width, x, y + 1))
				{
					newy = y + 1;
				}
			}
			else if(angle == 2)
			{
				if(exists(height, width, x+1, y))
				{
					newx = x + 1;
				}
			}
			else
			{
				if(exists(height, width,x, y - 1))
				{
					newy = y - 1;
				}
			}
			
			if(data[newx][newy].type == '.')
			{
				x = newx;
				y = newy;
				
				//cout << x << " " << y << endl;
				if(data[x][y].angle == angle && data[x][y].rule == currule)
					return false;
				data[x][y].angle = angle;
				data[x][y].rule = currule;
			}
			else if(data[newx][newy].type == 'E')
			{
				//cout << "found" << endl;
				return true;
			}
		}
		
		
		
		currule++;
		currule %= numrules;
	}
	
	return true;
}

int main()
{
	int height, width;
	while(cin >> height >> width)
	{
		
		int exits = 0;
		int freeTotal = 0;
		square** data = new square*[height];
		for(int x = 0; x < height; x++)
		{
			data[x] = new square[width];
			for(int y = 0; y < width; y++)
			{
				char dummy;
				cin >> dummy;
				data[x][y].type = dummy;
				data[x][y].angle = -1;
				
				if(dummy == '.')
				{
					freeTotal++;
				}
				else if(dummy == 'E')
				{
					exits++;
				}
			}
		}
		
		int numrules;
		cin >> numrules;
		
		char* rules = new char[numrules];
		for(int x = 0; x < numrules; x++)
		{
			cin >> rules[x];
		}
		
		
		int found = 0;
		
		//check(data, height, width, 1, 3, rules, numrules);
		for(int x = 0; x < height; x++)
		{
			for(int y = 0; y < width; y++)
			{
				if(data[x][y].type == '.')
				{
					if(check(data, height, width, x, y, rules, numrules))
					{
						found++;
					}
				}
			}
		}
		
		if(found == freeTotal)
		{
			cout << "OK" << endl;
		}
		else
		{
			cout << (found + exits) << endl;
		}
	}
	return 0;
}