Unable to solve Test case #4 of problem named "Security" in hard section of code coach

Question

I am using REGEX in this problem (personal preference). Can anyone identify exactly what my pattern is not recognising or where am I going wrong?

from re import search
pattern = r"(^G(x)*(\$)+(x)*T$)|(^T(x)*(\$)+(x)*G$)"

if search(pattern, input()):
print("ALARM")
else:
print("quiet")

Answer 1

Money doesn't have to be in middle,

consider two other cases, explicitly :
$_T_G
G_T_$

Answer 2

Still the fourth test case is failing. I added the above two conditions in the regex.

Answer 3

Because it doesn't have to begin with one of the three special characters and also does not have to end with one of the three special characters.

Instead of ^G, use "any character of any number exists or not exists", i. e. "^.*G.....

Same idea for handling the end.

Here is a reading about {n}, {a, b}, +, ? and *