#include <bits/stdc++.h>
using namespace std;
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, -1, 1};
int n, m;
char grid[1005][1005];
int startX, startY, endX, endY;
int cost[1005][1005];
int lookDir[1005][1005];
bool vis[1005][1005];
bool isValid(int i, int j) {
  return i >= 0 && i < n && j >= 0 && j < m && grid[i][j] != '*';
}
void bfs() {
  queue<pair<int, int> > q;
  q.push({startX, startY});
  cost[startX][startY] = 0;
  lookDir[startX][startY] = 4;
  vis[startX][startY] = 1;
  while (q.size()) {
    int x = q.front().first;
    int y = q.front().second;
    q.pop();
    for (int i = 0; i < 4; i++) {
      int xx = x + dx[i], yy = y + dy[i];
      if (isValid(xx, yy) && (!vis[xx][yy] || cost[x][y] + 1 <= cost[xx][yy])) {
        if (lookDir[x][y] == 4) {
          if (dx[i] == 1) lookDir[xx][yy] = 3;
          if (dx[i] == -1) lookDir[xx][yy] = 1;
          if (dy[i] == 1) lookDir[xx][yy] = 2;
          if (dy[i] == -1) lookDir[xx][yy] = 0;
        } else if (lookDir[x][y] == 3 || lookDir[x][y] == 1) {
          if (dy[i] != 0) cost[xx][yy] = cost[x][y] + 1;
          if (dy[i] == -1) lookDir[xx][yy] = 0;
          if (dy[i] == 1) lookDir[xx][yy] = 2;
          if (dy[i] == 0)
            lookDir[xx][yy] = lookDir[x][y], cost[xx][yy] = cost[x][y];
        } else if (lookDir[x][y] == 0 || lookDir[x][y] == 2) {
          if (dx[i] != 0) cost[xx][yy] = cost[x][y] + 1;
          if (dx[i] == -1) lookDir[xx][yy] = 1;
          if (dx[i] == 1) lookDir[xx][yy] = 3;
          if (dx[i] == 0)
            lookDir[xx][yy] = lookDir[x][y], cost[xx][yy] = cost[x][y];
        }
        vis[xx][yy] = 1;
        q.push({xx, yy});
      }
    }
  }
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cin >> n >> m;
  for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) {
      cin >> grid[i][j];
      if (grid[i][j] == 'S') startX = i, startY = j;
      if (grid[i][j] == 'T') endX = i, endY = j;
    }
  bfs();
  if (cost[endX][endY] <= 2 && vis[endX][endY])
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
  return 0;
}
