Dublicate rule and digits ?d

[AlexS]

Hello!
I use hashcat v6.2.6
In the command

Code:

mp64.exe ?d?d?d?d | hashcat  --stdout  -r dummy_digits.rule

where dummy_digits.rule  contain only d rule
output generated with unknown symbols and disordered

Code:

99659967
99669967
9967996?
99689969
99699979
99709971
99719973
99729973
99739977
99749975
99759977
99769977
9977997?
99789979
997999?9
99809981
99819983
99829983
99839987
99849985
99859987

The problem starts from three digits in mask (?d?d?d)