#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <quadmath.h>

// Yukicoder №424 立体迷路
// https://yukicoder.me/problems/no/424
// ***********************
// for debug
#define DEBUGs

#define NOP do{}while(0)
#ifdef DEBUG
#define TRACE(...) do{printf(__VA_ARGS__);fflush(stdout);}while(0)
#define TRACECR do{putchar_unlocked('\n');fflush(stdout);}while(0)
#else
#define TRACE(...) NOP
#define TRACECR NOP
#endif

#define PRINCR putchar_unlocked('\n')
#define NOCR(strig) do{char *p;p=strchr(strig,'\n');if(p)*p='\0';}while(0)
// The out-of-date function
#define	asctime(...)	asctime_s(...)
#define	ctime(...)		ctime_s(...)
#define	strlen(a)	mystr_len(a)
//#define	fopen(...)		fopen_s(...)
//#define	freopen(...)	freopen_s(...)
//#define	rewind(a)		fseek(a,0L,SEEK_SET)
//#define	setbuf(a,b)		setvbuf(a,b,_IOFBF,BUFSIZ)

// for stdio
#define GETLINE(str) do{char *p;fgets(str,sizeof(str),stdin);p=strchr(str,'\n');if(p)*p='\0';}while(0)
#define mygc(c) (c)=getchar()
static char *GETWORD( char* str );
static char *GETWORD(char* str) {char c;char *cp;cp=&str[0];c=getchar_unlocked();while( c != EOF ){if((c==' ')||( c=='\n')) break;*cp++=c;c=getchar_unlocked();}*cp='\0';return &str[0];}
#define	GETINTS(a,b) {char s[34];int *ap=a;REP(i,b){GETWORD(s);*ap++=atoi(s);}}
static int GETLINEINT(void) {char s[34];GETLINE(s);return atoi(s);}
static int GETWORDINT(void) {char s[34];GETWORD(s);return atoi(s);}
#define SWAP(type,a,b) do{type _c;_c=a;a=b;b=_c;}while(0)

static int max(int a,int b){if(a>b){return a;}return b;}
static int min(int a,int b){if(a<b){return a;}return b;}
// for readaility
typedef	long long	lolong;
const int	INF = 1e9;
const int	MOD = 1e9+7;
const lolong	LINF = 1e18;
#define PI	  ((double)3.141592653589793238462643383279)
#define	YES(a)	printf("%s",((a)?"YES":"NO"))
#define	Yes(a)	printf("%s",((a)?"Yes":"No"))
#define OK(a)	printf("%s",((a)?"OK":"NG"))
#define Ok(a)	printf("%s",((a)?"Ok":"Ng"))
#define	POSSIBLE(a)		printf("%s",((a)?"POSSIBLE":"IMPOSSIBLE"))
#define	Possible(a)		printf("%s",((a)?"Possible":"Impossible"))
#define SWAP(type,a,b) do{type _c;_c=a;a=b;b=_c;}while(0)
#define REP(a,b) for(int a=0;a<(int)(b);++a)
#define REP1(a,b) for(int a=1;a<=(b);++a)
#define FLOOP(a,b) for(a=0;a<(b);++a)
#define FLOOP1(a,b) for(a=1;a<=(b);++a)
#define	MABS(c)	 ((c)<0?(-(c)):(c))
#define LSB(i) ((i) & -(i))
#define INPBUF (250+2)

#define	data_s	int
// ***********************
// ***********************
static int cmpint_asc(const void *a,const void *b){if(*(int *)a>*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
static int cmpint_desc(const void *a,const void *b){if(*(int *)a<*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
static int cmpchar_asc(const void *a,const void *b){if(*(char *)a>*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}
static int cmpchar_desc(const void *a,const void *b){if(*(char *)a<*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}
static int mystr_len(char *str){int i=0;do{if(str[i]=='\0')break;i++;if(i>9999)break;}while(1);return i;}
static int countchar(char str[],char c,int limit ) {int	cnt = 0;for(int i=0;i<limit;i++) if( str[i] == c )cnt++;return cnt;}
static int absi(int c) {if(c<0){return -c;}else{return c;}}
// ***********************
// 外部変数
char MAP[56][56];
char MAPUSE[56][56];
int	goalx;
int	goaly;
int	finish = 0;
// ***********************
int	cashx[50*50+1];
int	cashy[50*50+1];
int	sp=-1;
// ***********************
void xypush(int y,int x) {
	if(!MAPUSE[y][x]) {
		cashx[++sp] = x;
		cashy[  sp] = y;
		MAPUSE[y][x] = 1;
		TRACE("u(%d,%d)", y-1, x-1);
	} else if( MAPUSE[y][x] == 2 ) {
		finish = 1;
	}
}
// ***********************
void	xypop( int *y, int *x ) {
	*x = cashx[sp  ];
	*y = cashy[sp--];
	TRACE("o(%d,%d)", *y-1, *x-1);
}
// ***********************
// ***********************
// ***********************
// ***********************
// ***********************
void walking(int y, int x ) {
	if( !finish ) {
		char	*myfloor = &MAP[y][x];
		TRACE("(%d,%d[%c])",x-1,y-1,*myfloor);
		
		if( absi(MAP[y][x-1] - *myfloor) < 2 ) xypush(y,x-1);
		if( (MAP[y][x-2] == *myfloor)&&(MAP[y][x-1] < *myfloor) ) xypush(y,x-2);

		if( (MAP[y-2][x] == *myfloor)&&(MAP[y-1][x] < *myfloor) ) xypush(y-2,x);
		if( absi(MAP[y-1][x] - *myfloor) < 2 ) xypush(y-1,x);

		if( absi(MAP[y][x+1] - *myfloor) < 2 ) xypush(y,x+1);
		if( (MAP[y][x+2] == *myfloor)&&(MAP[y][x+1] < *myfloor) ) xypush(y,x+2);


		if( (MAP[y+2][x] == *myfloor)&&(MAP[y+1][x] < *myfloor) ) xypush(y+2,x);
		if( absi(MAP[y+1][x] - *myfloor) < 2 ) xypush(y+1,x);

		if( finish ) return;
		while(sp >= 0) {
			xypop( &y, &x );
			walking( y, x );
		}
	}
	return;
}
// ***********************
int main() {
	int	h,w;
	int sx,sy;
	int	gx,gy;


	h = GETWORDINT();
	w = GETWORDINT();
	sy = GETWORDINT() +1;
	sx = GETWORDINT() +1;
	goaly = gy = GETWORDINT() +1;
	goalx = gx = GETWORDINT() +1;
	REP(i,h+4) {
		MAP[i][0] = 29 +'0';
		MAP[i][1] = 29 +'0';
		MAP[i][w+2] = 29 +'0';
		MAP[i][w+3] = 29 +'0';
	}
	REP(i,w+2) {
		MAP[0][i] = 29 +'0';
		MAP[1][i] = 29 +'0';
		MAP[h+2][i] = 29 +'0';
		MAP[h+3][i] = 29 +'0';
	}
	REP(y,56) REP(x,56) MAPUSE[y][x] = 0;	// 使用フラグ

	REP1(y,h) {
		REP1(x,w) {
			char c;
			c=getchar_unlocked();
			while( (c > '9')||( c < '0') ) c=getchar_unlocked();  
			MAP[y+1][x+1] = c ;
		}
	}
	//-----
	while(0){
		REP(y,h+4) {
			REP(x,w+4) {
				if( (y==sy)&&(x==sx) ) putchar_unlocked('S');
				else if( (y==gy)&&(x==gx) ) putchar_unlocked('G');
				else putchar_unlocked( MAP[y][x] );
			}
			putchar_unlocked('\n');
		}
		fflush(stdout);
		break;
	}
	MAPUSE[sy][sx] = 1;
	MAPUSE[gy][gx] = 2;
	if( MAPUSE[sy][sx] == 2 ) finish = 1;
	walking(sy,sx);
	YES( finish );
	PRINCR;
	return 0;
}