import re
tests = ['0ABCD TECHNOLOGIES SERVICES',
'ABCD0 TECHNOLOGIES SERVICES',
'ABCD 0TECHNOLOGIES SERVICES',
'ABCD TECHNOLOGIES0 SERVICES',
'ABCD TECHNOLOGIES 0SERVICES',
'ABCD TECHNOLOGIES SERVICES0']

rx = re.compile(r'(?<=\d)(?=[^\d\s])|(?<=[^\d\s])(?=\d)')

for test in tests:
	print(rx.sub(' ', test))