import re
def getNumbers(s):
return re.findall(r'(?<![0-9])1[89][0-9]{2}(?![0-9])', s)
testbirtdays = 'ABCDEFG 01.19.1701 1801 02.18.1901 2001'
print(getNumbers(testbirtdays))
aW1wb3J0IHJlCgpkZWYgZ2V0TnVtYmVycyhzKTogCiAgICByZXR1cm4gcmUuZmluZGFsbChyJyg/PCFbMC05XSkxWzg5XVswLTldezJ9KD8hWzAtOV0pJywgcykgCgp0ZXN0YmlydGRheXMgPSAnQUJDREVGRyAwMS4xOS4xNzAxIDE4MDEgMDIuMTguMTkwMSAyMDAxJwpwcmludChnZXROdW1iZXJzKHRlc3RiaXJ0ZGF5cykp