package D3;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class 내상호의배틀필드 {
final static int RIGHT=0, LEFT =1, DOWN =2, UP=3;
static int [][] arr;
static int h,w,x,y,dir;
static StringBuilder sb;
public static void main(String[] args) throws NumberFormatException, IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
sb = new StringBuilder();
int T = Integer.parseInt(br.readLine());
for(int tc = 1; tc<=T; tc++) {
StringTokenizer st = new StringTokenizer(br.readLine());
//맵만들기
h = Integer.parseInt(st.nextToken());
w = Integer.parseInt(st.nextToken());
arr = new int[h][w];
for(int j=0; j<h; j++) {
String t = br.readLine();
for(int k=0; k<w; k++) {
int temp = t.charAt(k);
arr[j][k] = temp;
if(temp!='.' && temp!='#' &&temp!='*' &&temp!='-') {
x = j;
y = k;
if(temp == '<') dir = LEFT;
else if(temp == '>') dir = RIGHT;
else if(temp == '^') dir = UP;
else if(temp == 'v') dir = DOWN;
}
}
}
int n = Integer.parseInt(br.readLine());
String t = br.readLine();
for(int j =0; j<n; j++) {
switch(t.charAt(j)){
case 'U':
up();
break; //이렇게 입력을 받으면
case 'D':
down();
break;
case 'L':
left();
break;
case 'R':
right();
break;
case 'S':
shoot();
break;
}
}
sb.append("#" +tc+ " ");
for(int j=0; j<h; j++) {
for(int k =0; k<w; k++)
sb.append((char)arr[j][k]);
sb.append("\n");
}
System.out.println(sb);
}
}
private static void shoot() {
switch(dir) {
//벽돌깨기, #,*,- 화면 끝까지 가고 조건 확인
case RIGHT:
for(int i=y+1; i<w; i++) {
if(arr[x][i]=='#')return;
else if(arr[x][i]=='*') {
arr[x][i]='.';
return;
}
}
break;
case LEFT:
for(int i = y-1; i>=0; i--) {
if(arr[x][i]=='#') return;
else if(arr[x][i]=='*') {
arr[x][i]='.';
return;
}
}
case DOWN:
for(int i =x+1; i<h; i++) {
if(arr[i][y] == '#') return;
else if(arr[i][y] == '*') {
arr[i][y] = '.';
return;
}
}
case UP:
for(int i =x-1; i>=0; i++) {
if(arr[i][y]=='#') return;
else if (arr[i][y]=='*') {
arr[i][y]='.';
return;
}
}
break;
}
}
// 오른쪽이동
private static void right() {
dir = RIGHT;
arr[x][y] ='>';
if(y+1>=w) return;
if(arr[x][y+1]=='.') {
arr[x][y++]='.'; // arr[x][y]
arr[x][y]='>'; //arr[x][y+1] 이여도될까?
}
}
private static void left() {
dir = LEFT;
arr[x][y] ='<';
if(y-1<0)return;
if(arr[x][y-1]=='.') {
arr[x][y--]='.';
arr[x][y]='<';
}
}
private static void down() {
dir =DOWN;
arr[x][y] ='v';
if(x+1>=h)return;
if(arr[x+1][y]=='.') {
arr[x++][y]='.';
arr[x][y]='v';
}
}
private static void up() {
dir = UP;
arr[x][y] = '^';
if(x-1<0)return;
if(arr[x-1][y]=='.') {
arr[x--][y]='.';
arr[x][y]='^';
}
}
}