import re
texts = ['error in node occurred in sstlgh8j at 10pm afterabchjk9j after 12pm',
'error in node occurredsstlgh8j at 10pm after abchjk9j after 12pm']
rx = re.compile(r'\s*(?:abc|sst)\w*')
for mystring in texts:
print(rx.sub('', mystring))
aW1wb3J0IHJlCnRleHRzID0gWydlcnJvciBpbiBub2RlIG9jY3VycmVkIGluIHNzdGxnaDhqIGF0IDEwcG0gYWZ0ZXJhYmNoams5aiBhZnRlciAxMnBtJywKJ2Vycm9yIGluIG5vZGUgb2NjdXJyZWRzc3RsZ2g4aiBhdCAxMHBtIGFmdGVyIGFiY2hqazlqIGFmdGVyIDEycG0nXQpyeCA9IHJlLmNvbXBpbGUocidccyooPzphYmN8c3N0KVx3KicpCmZvciBteXN0cmluZyBpbiB0ZXh0czoKCXByaW50KHJ4LnN1YignJywgbXlzdHJpbmcpKQ==