using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;
using System.Drawing;
using System.Threading.Tasks;

class Program
{
    static readonly int MaxSize = 1000 + 2500;
    static readonly int[] DY = { 0, 1, 0, -1 };
    static readonly int[] DX = { 1, 0, -1, 0 };

    public void Solve()
    {
        int H = Reader.Int(), W = Reader.Int();
        int A = Reader.Int(), sy = Reader.Int(), sx = Reader.Int();
        int B = Reader.Int(), gy = Reader.Int(), gx = Reader.Int();
        var grid = Reader.StringArray(H);
        Func<int, int, bool> IsInside = (r, c) => r >= 0 && r < H && c >= 0 && c < W;
        var seen = new bool[H, W, MaxSize + 1];
        seen[sy, sx, A] = true;
        var que = new Queue<int>();
        que.Enqueue(sy); que.Enqueue(sx); que.Enqueue(A);

        while (que.Count > 0)
        {
            int y = que.Dequeue(), x = que.Dequeue(), size = que.Dequeue();
            for (int dir = 0; dir < 4; dir++)
            {
                int ny = y + DY[dir], nx = x + DX[dir];
                if (!IsInside(ny, nx)) continue;
                int nsize = size + (grid[ny][nx] == '*' ? 1 : -1);
                if (nsize > 0 && nsize <= MaxSize && !seen[ny, nx, nsize])
                {
                    if (ny == gy && nx == gx && nsize == B) { Console.WriteLine("Yes"); return; }
                    seen[ny, nx, nsize] = true;
                    que.Enqueue(ny); que.Enqueue(nx); que.Enqueue(nsize);
                }
            }
        }

        Console.WriteLine("No");
    }
}


class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    private static TextReader reader = Console.In;
    private static readonly char[] separator = { ' ' };
    private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    private static string[] A = new string[0];
    private static int i;
    private static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Next()).ToArray(); }
    public static string Line() { return reader.ReadLine().Trim(); }
    private static string[] Split(string s) { return s.Split(separator, op); }
    private static string Next() { CheckNext(); return A[i++]; }
    private static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}