#include <bits/stdc++.h>
using namespace std;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int h, w, a, sy, sx, b, gy, gx;
    cin >> h >> w >> a >> sy >> sx >> b >> gy >> gx;
    vector<vector<vector<bool>>> dp(h, vector<vector<bool>>(w, vector<bool>(2001)));
    vector<string> A(h);
    for(auto &&s : A) cin >> s;
    queue<tuple<int,int,int>> nxt;
    dp[sy][sx][a] = true;
    nxt.emplace(sy, sx, a);
    int y, x, v;
    while(!nxt.empty()){
        tie(y, x, v) = nxt.front();
        nxt.pop();
        for(int i = 0; i < 4; i++){
            int ny = y + (i == 0) - (i == 1);
            int nx = x + (i == 2) - (i == 3);
            if(ny < 0 || nx < 0 || ny >= h || nx >= w) continue;
            int nv = v + (A[ny][nx] == '*' ? 1 : -1);
            if(nv <= 0 || nv >= 2001) continue;
            if(dp[ny][nx][nv]) continue;
            dp[ny][nx][nv] = true;
            nxt.emplace(ny, nx, nv);
        }
    }
    cout << (dp[gy][gx][b] ? "Yes" : "No") << '\n';
}