import re
def include_dollar_symbol_text(text: str) -> bool:
# Regex to match $word$ (case-insensitive)
cleaned_text = re.sub(r"\$[a-z]+\$", "", text, flags=re.IGNORECASE)
# Check if any $ remains
return "$" not in cleaned_text
print(include_dollar_symbol_text("abc xy $text$ z")) # ok
print(include_dollar_symbol_text("abc xy $ text$ z")) # space
print(include_dollar_symbol_text("abc xy $$ z")) # empty
print(include_dollar_symbol_text("abc 100 $text$ z")) # ok
print(include_dollar_symbol_text("abc $1000 $text$ z")) # open $
print(include_dollar_symbol_text("abc xy $IBM$ z $Microsoft$")) # ok
print(include_dollar_symbol_text("abc xy $F3$ z")) # include number
print(include_dollar_symbol_text("abc xy $text z")) # missing close $
'''
run:
True
False
False
True
False
True
False
False
'''
