import java.util.*;
public class Solution {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        for(int a=1;a<=t;a++) {
        	int h=sc.nextInt();
        	int w=sc.nextInt();
        	char[][]map=new char[h][w];
        	int[]tank=new int[2];
        	for(int b=0;b<h;b++) {
        		String s=sc.next();
        		for(int c=0;c<w;c++) {
        			map[b][c]=s.charAt(c);
        			if(map[b][c]=='^'||map[b][c]=='v'||map[b][c]=='<'||map[b][c]=='>') {
        				tank[0]=b;
        				tank[1]=c;
        			}
        		}
        	}
        	int n=sc.nextInt();
        	String s=sc.next();
        	for(int b=0;b<n;b++) {
        		char command=s.charAt(b);
        		if(command=='S') {
        			switch(map[tank[0]][tank[1]]) {
        			case '^':
            			shoot(map,tank[0],tank[1],h,w,'U');
            			break;
        			case 'v':
            			shoot(map,tank[0],tank[1],h,w,'D');
            			break;
        			case '<':
            			shoot(map,tank[0],tank[1],h,w,'L');
            			break;
        			case '>':
            			shoot(map,tank[0],tank[1],h,w,'R');
            			break;
        			}
        		}
        		else {
        			move(map,tank[0],tank[1],h,w,tank,command);
        		}
        		System.out.print("");
        	}
            System.out.print("#"+a+" ");
            for(int b=0;b<h;b++) {
            	for(int c=0;c<w;c++) {
            		System.out.print(map[b][c]);
            	}
            	System.out.println();
            }
        }
        sc.close();
    }

	private static void move(char[][] map, int i, int j, int h, int w, int[] tank, char command) {
		switch(command) {
		case 'U':
			map[i][j]='^';
			if(i-1>=0&&map[i-1][j]=='.') {
				tank[0]=i-1;
				map[i-1][j]=map[i][j];
				map[i][j]='.';
			}
			break;
		case 'D':
			map[i][j]='v';
			if(i+1<=h-1&&map[i+1][j]=='.') {
				tank[0]=i+1;
				map[i+1][j]=map[i][j];
				map[i][j]='.';
			}
			break;
		case 'L':
			map[i][j]='<';
			if(j-1>=0&&map[i][j-1]=='.') {
				tank[1]=j-1;
				map[i][j-1]=map[i][j];
				map[i][j]='.';
			}
			break;
		case 'R':
			map[i][j]='>';
			if(j+1<=w-1&&map[i][j+1]=='.') {
				tank[1]=j+1;
				map[i][j+1]=map[i][j];
				map[i][j]='.';
			}
			break;
		}
	}

	private static void shoot(char[][] map, int i, int j, int h, int w, char c) {
		switch(c) {
		case 'U':
			if(i-1>=0) {
				if(map[i-1][j]=='*') {
					map[i-1][j]='.';
				}
				else if(map[i-1][j]=='.'||map[i-1][j]=='-') {
					shoot(map,i-1,j,h,w,c);
				}
			}
			break;
		case 'D':
			if(i+1<=h-1) {
				if(map[i+1][j]=='*') {
					map[i+1][j]='.';
				}
				else if(map[i+1][j]=='.'||map[i+1][j]=='-') {
					shoot(map,i+1,j,h,w,c);
				}
			}
			break;
		case 'L':
			if(j-1>=0) {
				if(map[i][j-1]=='*') {
					map[i][j-1]='.';
				}
				else if(map[i][j-1]=='.'||map[i][j-1]=='-') {
					shoot(map,i,j-1,h,w,c);
				}
			}
			break;
		case 'R':
			if(j+1<=w-1) {
				if(map[i][j+1]=='*') {
					map[i][j+1]='.';
				}
				else if(map[i][j+1]=='.'||map[i][j+1]=='-') {
					shoot(map,i,j+1,h,w,c);
				}
			}
			break;
		}
	}
}