ll h,w,k,l,r;
char s[512][512];
char z[6d5];
ll d[512][512],e[][];
ll q[1d6];

void f(ll sy,ll sx,ll d[512][512]){
	d[sy][sx]=1;
	ll i=0,j=0;
	q[j++]=sy;
	q[j++]=sx;
	while(i<j){
		ll y=q[i++];
		ll x=q[i++];
		rep(a,4){
			ll y2=y-(a==0)+(a==1);
			ll x2=x-(a==2)+(a==3);
			if(y2>=0&&y2<h&&x2>=0&&x2<w&&s[y2][x2]=='.'&&!d[y2][x2]){
				d[y2][x2]=d[y][x]+1;
				q[j++]=y2;
				q[j++]=x2;
			}
		}
	}
}

void g(ll y,ll x,ll d[512][512],ll p,ll t){
	while(d[y][x]!=1){
		rep(a,4){
			ll y2=y-(a==0)+(a==1);
			ll x2=x-(a==2)+(a==3);
			if(y2>=0&&y2<h&&x2>=0&&x2<w&&d[y2][x2]==d[y][x]-1){
				y=y2;
				x=x2;
				z[p]="UDLR"[t<0?a^1:a];
				p+=t;
				break;
			}
		}
	}
}

{
	rd(h,w,k,l,r,s(h));
	f(0,0,d);
	f(h-1,w-1,e);
	if(r-l+1&1||h+w+k&1||!e[0][0]){
		wt("No");
		exit(0);
	}
	rep(y,h){
		rep(x,w){
			if(x+y+l&1&&d[y][x]&&d[y][x]-1<=l-1&&e[y][x]-1<=k-r&&(y>0&&y<h-1&&d[y-1][x]&&d[y+1][x]||x>0&&x<w-1&&d[y][x-1]&&d[y][x+1])){
				g(y,x,d,d[y][x]-2,-1);
				g(y,x,e,k-e[y][x]+1,1);
				ll p=d[y][x]-1;
				ll n=k-d[y][x]-e[y][x]+2>>1;
				if(y>0&&y<h-1&&d[y-1][x]&&d[y+1][x]){
					rep(n){
						z[p++]='D';
						z[p++]='U';
					}
				}else{
					rep(n){
						z[p++]='R';
						z[p++]='L';
					}
				}
				wt("Yes");
				wt(z);
				exit(0);
			}
		}
	}
	wt("No");
}