help pls hashcat command brute force

[jayboi82]

hi can some help me I am trying to bruteforce virgin media handshake I want to reduce the keyspace. i know I O are omitted from virgin media passwords which are 8 lowercase so how do i write the command line in hashcat can someone give me a example

[Xanadrel]

https://hashcat.net/wiki/doku.php?id=mask_attack