using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int[] inpt = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();
        this.Map =  new Dictionary<int, int>[inpt[0], inpt[1]];
        this.Src = new char[inpt[0], inpt[1]];
        inpt = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();
        int defaultSize = inpt[0];
        int startY = inpt[1];
        int startX = inpt[2];
        
        inpt = Reader.ReadLine().Split(' ').Select(a=>int.Parse(a)).ToArray();
        int goalSize = inpt[0];
        int goalY = inpt[1];
        int goalX = inpt[2];
        
        int yukiCount = 0;
        int jimenCount = 0;
        
        for(int i=0; i<this.Map.GetLength(0); i++) {
            string str = Reader.ReadLine();
            for(int j=0; j<str.Length; j++) {
                if(str[j] == '*') {
                    yukiCount++;
                } else
                {
                    jimenCount++;
                }
                this.Src[i,j] = str[j];
            }
        }
        
        TaskItem firstTask = new TaskItem(startX, startY, defaultSize);
        Queue<TaskItem> taskQ = new Queue<TaskItem>();
        taskQ.Enqueue(firstTask);
        
        while (taskQ.Count > 0)
        {
            TaskItem tsk = taskQ.Dequeue();
            int size = tsk.Size;
            
            if(this.Map[tsk.Y, tsk.X] != null && this.Map[tsk.Y, tsk.X].ContainsKey(tsk.Size)) {
                continue;
            }
            if(this.Map[tsk.Y, tsk.X] == null) {
                this.Map[tsk.Y, tsk.X] = new Dictionary<int, int>();
            }
            this.Map[tsk.Y, tsk.X].Add(size, 1);
            if(tsk.Y == goalY && tsk.X == goalX && size == goalSize) {
                break;
            }
            int[][] next = new int[4][];
            next[0] = new int[]{tsk.Y - 1, tsk.X};
            next[1] = new int[]{tsk.Y + 1, tsk.X};
            next[2] = new int[]{tsk.Y, tsk.X + 1};
            next[3] = new int[]{tsk.Y, tsk.X - 1};
            for(int i=0; i<next.Length; i++) {
                int nextY = next[i][0];
                int nextX = next[i][1];
                
                if(nextY < 0 || nextY >= this.Map.GetLength(0) || nextX < 0 || nextX >= this.Map.GetLength(1)) {
                    continue;
                }
                int newVal = (this.Src[nextY, nextX] == '*'?size+1:size-1);
                if(newVal <= 0) {
                    continue;
                }
                if(newVal > this.Map.GetLength(0) * this.Map.GetLength(1) + goalSize) {
                    continue;
                }
                TaskItem newT = new TaskItem(nextX, nextY, newVal);
                taskQ.Enqueue(newT);
            }
        }
        string ans = "No";
        if(this.Map[goalY, goalX] != null && this.Map[goalY, goalX].ContainsKey(goalSize)) {
            ans = "Yes";
        }
        Console.WriteLine(ans);

    }
    
    private Dictionary<int, int>[,] Map;

    private char[,] Src;  

    private class TaskItem {
        public int X;
        public int Y;
        public int Size;
        public TaskItem(int x, int y, int size) {
            this.X = x;
            this.Y = y;
            this.Size = size;
        }
    }
    
    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"




2 1
1 0 0
4 1 0
*
*


 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}