public static char eight(int r, int c, int f) {
		if (s1(r, c, f) || s2(r, c, f) || s4(r, c, f) || s5(r, c, f))
			return '|';
		else if (s3(r, c, f) || s6(r, c, f) || s7(r, c, f))
			return '_';
		return '.';
	}