briefly appeared on SO before being killed by mods (OP never made an effort to show their progress)
# source: 00000550000066000007700000880000099
# want: 00000550000066000007700000880000099
import re
print([m.group(0) for m in re.finditer(r"(0{5}\d{2})", "00000550000066000007700000880000099")])