I'm assuming TALKTALK keyspace.
hashcat -m 2500 handshake.hccapx -a 3 -1 ABCDEFGHJKMNPQRTUVWXY346789 ?1?1?1?1?1?1?1?1
https://hashcat.net/wiki/doku.php?id=mask_attack
hashcat -m 2500 handshake.hccapx -a 3 -1 ABCDEFGHJKMNPQRTUVWXY346789 ?1?1?1?1?1?1?1?1
https://hashcat.net/wiki/doku.php?id=mask_attack