new to hashcat trying to learn

[winxp5421]

One possible solution would be to create a Maskfile

hashcat -a 3 -m 2500 Prova.hccapx -1 ?l?d masks.hcmask

cat masks.hcmask
?1a?1a?1?1?1?1
?1b?1b?1?1?1?1
?1c?1c?1?1?1?1
...