import re
regex = r"(?:OR011-|OGEA|LLCM|A|1-)\d{2,15}"
test_str = ("OR011-103401461251\n"
"Hi the information is 1-234455\n"
"How are you?LLCM23466723")
print(re.findall(regex, test_str))
aW1wb3J0IHJlCnJlZ2V4ID0gciIoPzpPUjAxMS18T0dFQXxMTENNfEF8MS0pXGR7MiwxNX0iCgp0ZXN0X3N0ciA9ICgiT1IwMTEtMTAzNDAxNDYxMjUxXG4iCgkiSGkgdGhlIGluZm9ybWF0aW9uIGlzIDEtMjM0NDU1XG4iCgkiSG93IGFyZSB5b3U/TExDTTIzNDY2NzIzIikKcHJpbnQocmUuZmluZGFsbChyZWdleCwgdGVzdF9zdHIpKQ==