#include <string>
#include <vector>
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<stack>
#include<queue>
#include<cmath>
#include<algorithm>
#include<functional>
#include<list>
#include<deque>
#include<bitset>
#include<set>
#include<map>
#include<unordered_map>
#include<cstring>
#include<sstream>
#include<complex>
#include<iomanip>
#include<numeric>
#define X first
#define Y second
#define pb push_back
#define rep(X,Y) for (int (X) = 0;(X) < (Y);++(X))
#define rrep(X,Y) for (int (X) = (Y)-1;(X) >=0;--(X))
#define repe(X,Y) for ((X) = 0;(X) < (Y);++(X))
#define peat(X,Y) for (;(X) < (Y);++(X))
#define all(X) (X).begin(),(X).end()
#define rall(X) (X).rbegin(),(X).rend()
#define eb emplace_back
#define UNIQUE(X) (X).erase(unique(all(X)),(X).end())

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<class T> using vv=vector<vector<T>>;
template<class T> ostream& operator<<(ostream &os, const vector<T> &t) {
os<<"{"; rep(i,t.size()) {os<<t[i]<<",";} os<<"}"<<endl; return os;}
template<class S, class T> ostream& operator<<(ostream &os, const pair<S,T> &t) { return os<<"("<<t.first<<","<<t.second<<")";}
const ll MOD=1e9+7;

int mx[99][99][3123],dx[]={1,0,-1,0},dy[]={0,1,0,-1};
#include<cassert>
typedef pair<pii,int> piii;
int main(){
  ios_base::sync_with_stdio(false);
  cout<<fixed<<setprecision(0);
  int n,m,a,sx,sy,b,gx,gy;;
  cin>>n>>m>>a>>sy>>sx>>b>>gy>>gx;
  vector<string> mp(n);
  rep(i,n) cin>>mp[i];

  if((sy+sx-gy-gx+a-b)%2){
    //assert(0);
    cout<<"No"<<endl;
    return 0;
  }
  
  mx[sy][sx][a]=1;
  queue<piii> que;
  que.emplace(pii(sx,sy),a);
  while(que.size()){
    piii p=que.front(); que.pop();
    int t=p.Y;
    //if(p.X==gx && p.Y==gy && t>=b) break;
    rep(d,4){
      int x=p.X.X+dx[d],y=p.X.Y+dy[d];
      if(x<0 || m<=x || y<0 || n<=y) continue;
      int tt=t-1;
      if(mp[y][x]=='*') tt+=2;
      if(tt<=0 || 3000<tt) continue;
      if(!mx[y][x][tt]){
	que.emplace(pii(x,y),tt);
	mx[y][x][tt]=1;
      }
    }
  }
  cout<<(mx[gy][gx][b]?"Yes":"No")<<endl;
  return 0;
}